This is the album out-of-print one from 1965. It was an interesting experiment, mixing the sped-up voices of Alvin, Simon, and Theodore with a children's chorus (the Jimmy Joyce Singers), but it's a nice change. Hope you like it!
Do-Re-Mi
Rag Mop
Me Too (Ho-Ho! Ha-Ha!)
Mister Sandman
Hello Dolly
Puff the Magic Dragon
Tonight You Belong to Me
Supercalifragilisticexpialidocious
Tea for Two
Que Sera Sera
Mississippi Mud
Down by the Old Mill Stream