In less than a year, during 2010, the band earned an estimated 500 million Norwegian kroner from concert tickets, merchandise and the release of a greatest hits album, making them one of the 40–50 largest-grossing bands in the world. The band were listed in the Guinness World Records book for having the biggest-paying rock concert attendance; they drew an audience of 198,000 at Maracanã Stadium during Rock in Rio festival. Another record for the band is for singer Morten Harket, who was (and is still) listed in the "Guinness World Records" book in 2001 for the longest live note held; he held a note in "Summer Moved On" for 20.2 seconds. Their exact sale figures are somewhat controversial; according to their label, Rhino Entertainment, they have sold 55 million records, but other sources assert that they have sold more than 100 million units, albums and singles combined. The trio, composed of lead vocalist Morten Harket; guitarist Pål Waaktaar-Savoy and keyboardist Magne Furuholmen, formed in 1982 and left Norway for London in order to make a career in music. "We were trying to think of what to call themselves, focusing on Norwegian words people could say in English." They jettisoned that idea when Morten spotted a song called "A-ha" in Waaktaar's songbook. "It was a terrible song but a great name," says Morten. They chose the studio of musician, producer, and soon-to-be-manager John Ratcliff because it had a "Space Invaders" machine. John Ratcliff introduced them to his manager, Terry Slater, and after a few meetings, A-ha enlisted Ratcliff as a manager as well. Slater and Ratcliff formed TJ Management. Ratcliff dealt with technical and musical aspects and Slater acted as the group's international business manager and as liaison to Warner Brothers' head office in Los Angeles. An early version of "Take On Me" was the first song that Morten Harket had heard Magne Furuholmen and Pål Waaktaar play in Asker. At that time, the song was called "Miss Eerie", and the two men were still known as Bridges. Morten stated it sounded more like a " Juicy fruit song " for a gum advert - It was renamed "Lesson One" when it was first recorded by A-ha.