Chain Streak!
Music: Band/Artist 
This is a riff on the usual A-Z games, where you add a suitable answer alphabetically after the last, but … when it gets to Z you then have to give 2 A answers (AA), and then 3 on the next roll round (AAA), and so on.
As X is a toughie, words beginning with Ex are also acceptable (or just anything with an X in if you’re really stuck).
There’s a one day timer on this topic, so if no-one posts for 24 hours the streak is broken and we all have to start back at A again. 
This is the stub post, so if all you see is this one then chuck in a fresh ‘A’ band/artist, and try and get a new streak going. 
Good luck! 