The topic is Barbershop music, kinda like rap and stuff like that. 
I think Barbershop music is so beautiful.  The harmonies are so pretty!
Jimmy Fallon does them on his show every once in a while, Have you ever seen any of them?
ha ha!!  Oh I get you that kind  of Barbershop music.  I am think the acapella kind!
haha yes exactly, with the guys wearing the pinstripe suits.
a group of four singers with one on each vocal part, or a barbershop chorus, which closely resembles a choir with the notable exception of the genre of music.
According to the Barbershop Harmony Society (BHS), "Barbershop music features songs with understandable lyrics and easily singable melodies, whose tones clearly define a tonal center and imply major and minor chords and barbershop (dominant and secondary dominant) seventh chords that resolve primarily around the circle of fifths, while making frequent use of other resolutions." Slower barbershop songs
purity' of tone and genetic proximity that smoothed their voices was almost creepy, pseudo-castrato, [and] a 'barbershop' sound." Jimmy Webb said, "They used very little vibrato and sing in very straight tones. The voices all lie down beside each other very easily – there's no bumping between them because the pitch is very precise." According to Brian: "Jack Good once told us, 'You sing like eunuchs in a Sistine Chapel,' which was a pretty good quote.