This is really fun, you guys! Canadian musicians Andrew Huang and David Brown of Boy in a Band presented themselves with the challenge of naming and demonstrating 26 musical genres in alphabetical order. A is for A Capella, B is for Barbershop, C is for Crunk, D is for Death Metal, and on it goes.
Sadly this means Disco had to get skipped. Gladly, so did Dubstep.
[h/t: Laughing Squid]