The men driving Paris Saint-Germain's quest for dominance
It was the night Paris Saint-Germain dreamed of every since they joined the free-spending nouveau riche of European football back in 2011.
In battering Barcelona 4-0 on a giddy night at the Parc des Princes, they pressed their claim to be considered among Europe's elite clubs and also underlined their Champions League-winning credentials.
But who are the people who make up PSG? Here's your bluffer's guide to the club that sent a tremor through European football on Tuesday night.
Paris Saint-Germain's players celebrate their famous win over Barcelona on Tuesday night
Barcelona's stars were left shell-shocked after suffering a humiliating first leg defeat
The PSG support celebrate deliriously after the emphatic first leg win over Barcelona
Where does the money come from?
Put simply, PSG are owned by the Middle-Eastern country of Qatar, via a fund known as Qatar Sports Investments (QSI). They are, in turn, an arm of the Qatar Investment Authority, who have investments in real estate, banking and other sectors all around the world.
PSG were a mid-ranking French side struggling with debuts under American investment firm Colony Capital when the buy-out happened in June 2011. The deal was worth around £42million and wiped out their £17m debts and losses from the previous season.
It also, in a stroke, transformed them into one of the world's richest clubs with the power to sign pretty much any player they wanted.
There were echoes of the Abu Dhabi takeover at Manchester City as oil revenues enabled spending sprees and the beginning of PSG's quest to become the best in Europe.
But there are more layers to the PSG takeover than were first apparent, with the takeover deal wrapped up in Qatar's ultimately successful bid to stage the 2022 World Cup.
PSG chief executive Nasser Al-Khelaifi salutes the fans after the win over Barcelona
In November 2010, two weeks before the vote, UEFA president Michel Platini had lunch at the Elysee Palace with French president and PSG supporter Nicolas Sarkosy and the crown prince of Qatar, Tamim bin Hamad al-Thani.
Platini changed his vote from the United States to Qatar in the weeks leading up to the decision, but he has always maintained he made this decision before this high-level lunch.
It was also around that dinner table that Platini learned of the Qatari intention to purchase PSG, though Sarkosy's influence in this is unclear.
The latest Forbes football rich list placed PSG as the sixth wealthiest in the world, with an annual revenue of £442.2million. This places them behind Barcelona, Manchester United, Real Madrid, Bayern Munich and Arsenal, but they're climbing.
Al-Khelaifi (top left) sits alongside Barcelona president Josep Bartomeu and other dignitaries during the Champions League last 16, first leg match
Who is the public face of the money?
That would be the club's chairman and chief executive, Nasser Al-Khelaifi. You'll have seen him smiling and waving at the PSG fans after their famous win on Tuesday night.
A former professional tennis player, the 43-year-old businessman also became the chairman of QSI at the same time of the PSG takeover, presenting a five-year plan to take PSG to the pinnacle of European football (they're slightly behind but getting there).
It's little wonder that in 2016, French sports newspaper L'Equipe named him 'the most powerful man in French football' given PSG's domestic dominance since the takeover.
PSG celebrate after Angel Di Maria scored in their victory over Barcelona
Far from just being the public face at time of triumph, Al-Khelaifi has a hands-on influence within the club and it was his immense frustration at losing to Manchester City in last season's quarter-finals that led to him replacing manager Laurent Blanc with Unai Emery.
His other business interests have led to the financial strengthening of French football. Al-Khelaifi is also chief executive of beIN Media Group and beIN SPORTS, an increasingly prominent TV network.
Just three weeks after the takeover, beIN and Canal+ paid a vastly increased £515million a year for the Ligue 1 broadcast rights, something that has since increased to £616million.
So the financial influence from Qatar certainly extends beyond PSG to the rest of the league as well.
PSG players jump for joy as they celebrate their historic victory with their fans
Who gets to spend the money?
An early popular move by the Qataris was to bring in former player Leonardo as director of football, the Brazilian being tasked with attracting the world's finest talent to Paris.
With his blank chequebook, he oversaw the signings of Thiago Motta, Javier Pastore, Jeremy Menez, Mohamed Sissoko and others, as well as the managerial appointment of Carlo Ancelotti.
But after his resignation in July 2013, the position remains curiously vacant for over three years until the appointment of Patrick Kluivert late last year.
Former Holland striker Patrick Kluivert was appointed the club's director of football last year
The arrival of the 40-year-old Dutchman raised plenty of eyebrows, especially given his complete lack of experience in such a position before.
But Kluivert seems to have secured early coups in signing Julian Draxler from Wolfsburg for £29m and the up-and-coming Portuguese winger Goncalo Guedes from Benfica for £25.5m.
Witnessing Draxler score PSG's second goal against Barcelona would have been a satisfying moment.
January signing Julian Draxler celebrates his goal on Tuesday night with Marco Verratti
Who picks the team?
Blanc had established a virtual PSG monopoly on the domestic honours, but the man PSG's owners believe can elevate them to European success is the 45-year-old Spaniard Emery.
Part of the basis of that belief is his three Europa League wins on the spin with Sevilla, following some reasonable success with Valencia in his homeland.
But the incredible wealth of the owners doesn't exactly guarantee Emery patience and the reality is that he needed that thumping win over Barcelona.
The animated PSG manager Unai Emery pictured on the touchline during the match
In the past few seasons, domestic superiority has been pretty much assured and PSG usually have one hand on the Ligue 1 trophy by this point in the campaign.
There had been murmurings that Emery was already under pressure and, in all honesty, a tie with Barcelona was the last thing he wanted considering they threw away top spot in their group to Arsenal.
But it will offer an immense confidence boost going forward, with PSG currently three points behind leaders Monaco in the league table.
Who are the star names?
The most prominent PSG players require little introduction.
At the back, German goalkeeper Kevin Trapp is protected by a well-stocked defence that includes the team's captain and leader Thiago Silva, his heir Marquinhos, the veteran Brazilian left-back Maxwell and the dynamic Serge Aurier on the other side.
Last summer saw the arrival of Belgian Thomas Meunier and he has alternated with Aurier this season, in the same way Layvin Kurzawa has swapped with Maxwell.
Protecting the back line are the 34-year-old Thiago Motta and the Pole Grzegorz Krychowiak, also signed last summer.
PSG defender Thomas Meunier tackles Neymar during Tuesday night's win
Blaise Matuidi wins an aerial duel during PSG's game with Barcelona
Many clubs would be envious of PSG's central midfield options, including Italian Marco Verratti, the powerful Frenchmen Blaise Matuidi and Adrien Rabiot.
The flair and creativity are provided by Argentine Javier Pastore, Draxler, Brazilian winger Lucas and Argentine Angel Di Maria, who scored twice against Barcelona and looked back to his best following that awful time at Man United.
In the form of his life up front, and matching the scoring feats of the departed Zlatan Ibrahimovic, is Uruguayan star Edinson Cavani. His goal against Barcelona took his tally for the season to 34 goals in just 32 games.
Angel Di Maria was excellent against Barcelona, scoring two goals in the 4-0 win
Striker Edinson Cavani has been in outstanding form this season, scoring 32 times
Any talents coming through?
Although they can buy anyone they like, PSG have also invested heavily in their academy with the intention of identifying and nurturing world class French talents.
This mission is starting to bear fruit, with the PSG under 19 side reaching the final of the UEFA Youth League last season. Having eliminated Real Madrid in the semi-finals, they were beaten by Chelsea in the final.
That team will be among the favourites to claim the trophy this season and they face Red Bull Salzburg in the last 16 later this month.
Some of those academy products are starting to graduate as well. You may have noticed how impressive 21-year-old Presnel Kimpembe was as he slotted in for Thiago Silva at the heart of defence.
Presnel Kimpembe, the young PSG defender, leaves Luis Suarez reeling
He is an exciting prospect and one of the reasons why the sale of David Luiz back to Chelsea was sanctioned last summer.
Another youngster enjoying increased game time is the 19-year-old midfielder Christophger Nkunku, who came off the bench on Tuesday night.
Up front, there is great optimism over 19-year-old striker Jean-Kevin Augustin, the star of their Youth League team, who has scored his first league goal this season.
So what have they actually won so far?
It's worth noting that PSG are a relatively young club, having only been founded in 1970.
Before the takeover they had been champions of France twice, in 1986 and 1994, and the only other real high point in their history was in the mid-nineties, when they also won the European Cup Winners' Cup.
But their trophy cabinet has expanded massively since the Qataris arrived, with the last four Ligue 1 titles, two French Cups and three League Cups.
However, it's the Champions League they crave the most. Could this be their time?