Lyric wise I can see how it might offer a line or two to break through the proverbial writer's block but that's about it. I dabbled around with the lyric generation aspect the other day and found the outputs to be pedestrian, hackneyed and simply boring. If you have a great melody it might work for you but if you expect folks to pay attention to the lyric, well, I'm yet to see that. But then I'm a very average writer so perhaps I missed something ... nah

Bud