New classical music idea

I got a big idea yesterday for a new musical work. A minimal contemporary classical work, possibly without any percussion, using only my voice, acoustic and electric guitar, organ, and piano. It would also be inspired by Scott Walker's later albums such as Tilt. I would use my trained classical voice rather than my pop/rock voice.

I'm inspired musically by this idea, but I'm not inspired lyrically. I have no theme I want to sing about. This has been a problem for years. I'm interested in taking someone else's poetry and using that as a lyrical basis. I might come up with the lyrics myself. I really want to sing, but lyrics are important for that.