The Who included a drummer.
Happy Jack (song) . At the tail end of `` Happy Jack '' , Townshend can be heard shouting `` I saw you ! '' , and it is said that he was noticing drummer Keith Moon trying to join in surreptitiously to add his voice to the recording , something the rest of the band disliked . The Who . Their first single as the Who , `` I Ca n't Explain '' , reached the UK top ten , followed by a string of singles including `` My Generation '' , `` Substitute '' and `` Happy Jack '' .