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 the song ain't no sunshine?" whose answer is Bill Withers.
Each document should contain about 30 words, and these documents should contain useful information.

Query: who sings ain't no sunshine
Useful Output:

Doc 1: Bill Withers performing "Ain't No Sunshine" live on Old Grey Whistle Test, 1972 in HD Listen to Bill Withers:
Doc 2: He performed it perfectly every time. It is his song, however Bill Withers performes it, is how it is supposed to be :) You probably mean
Doc 3: Bill Withers, the influential Grammy-winning soul singer-songwriter who scored four smash singles including the iconic 'Lean on Me” and “Ain't No Sunshine When
Doc 4: Ain't No Sunshine — Bill Withers never finished writing the lyrics to his 1971 breakthrough hit. Bill Withers was a late starter by music
Doc 5: Bill Withers singing Ain't No Sunshine is right up there with The Moon Landing, Churchill's 'Fight them on the beaches', the Coca-Cola logo