You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "who sings vocals on dirty work by steely dan?" whose answer is David Palmer.
Each document should contain about 30 words, and these documents should contain useful information.

Query: who sings vocals on dirty work by steely dan
Useful Output:

Doc 1: Whatever Happened To Steely Dan Singer David "Dirty Work" Palmer? · Comments.
Doc 2: David Palmer was the lead vocalist on this track and "Brooklyn," contributing backing vocals on the rest of the record. "Dirty Work" is a simple
Doc 3: Steely Dan - Dirty Work | Do it Again - Live 2006. Donald Fagen - Keyboards, Vocals Walter Becker - Guitar Carolyn
Doc 4: But it's Palmer's voice that most still hear in their head whenever someone mentions 'Dirty Work', Steely Dan's soft rock classic. An error
Doc 5: In any case, Palmer was a good choice to sing "Dirty Work" -- his voice fits the song like a glove, sounding every bit the fool for love that