You could do this, but I think it misinterprets what Fiverr is actually best for. I don't think it's a great idea to provide a lyric and expect to end up with a decent finished song. John uses it to add a solo on an instrument he doesn't play (saxophone). That's how I would envisage using it. You could go a bit further down the road you are suggesting and provide a lyric and melody and recruit Fiverr folks to play the instruments, but providing just a lyric seems to be asking for a level of collaboration the site wasn't designed for.

I haven't used Fiverr, so I could be completely wrong.

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