So, this is a challenge, just not official. It's something to think about.
I am doing this with a friend (SmokeScape), and it's simply this: a battle between musicians.
Have an outside source (someone else) decide on a main tempo, key and time signature (preferably to be 4/4). 2 musicians use those limitations to create a song one verse at a time. Think of every song verse or musical phrase as a fighting move, or something to that effect. It's a song created out of a musician battle.
>You cannot build over the other artist's verse
>it is preferable you don't set any huge time limits (e.g., you have 10 minutes to make a verse), or a time limit at all.
>Try to make your parts of the song distinguishable from the other person's music.
The current battle I am doing is: "Smokescape battles Crash D. - Fist Fight". Discuss below, guise, or if this gets off the ground as an idea, try requesting battles to people. This could be some kind of olympic sport or something.