This worked pretty well last time, and I could use a little inspiration around now, so let's give it another whirl:
- Comment here and I'll pick one of your LJ interests and write lyrics, in a style of my choosing.
- You have no say in what I write for you, or the quality thereof.
Last time there was an 'put this in your journal along with the lyrics written for you' item, but very few people followed through, so I think I'll skip it this time and just take it as read that if you are interested in doing something similar you will.
Since I've done this before I should add one more rule:
- If you participated last time I did this I will try to pick different interests than I did last time, if possible.
Last time I ended up writing ten sets of lyrics and ultimately made three recordings, so I think it counts as a successful experiment. 
