Misc: what would an artist put on a wooden stretcher?

Questions

Name Jerry Garcia's long lived group.?

The Who's rock musical stars Elton John. It's called ________.?

This female artist enjoyed sucess on both popular and country & western stations with such tunes as "Let Me Be There" and "Have You Never Been Mellow."?

This was the Beatle's first film.?

What Procol Harem tune was based on the Bach cantata Sleepers Awake?