Answer: falsetto

AnswerCrossword Clue
FALSETTOHigh voice
FALSETTOUnnatural high
FALSETTONovelty singing feature
FALSETTOSomething funny to sing in
FALSETTOTiny Tim sang in it
FALSETTOCertain doo-wopper
FALSETTOMuch higher than normal
FALSETTOFrankie Valli sang in it
FALSETTOTiny Tim was one
FALSETTOSomething to sing in
FALSETTORegister for Tiny Tim
FALSETTOUnnaturally high voice
FALSETTOMale voice
FALSETTOTenors' style
FALSETTOHigh-toned, in a manner of speaking
FALSETTODoo-wop song's high voice
FALSETTOForced high notes
FALSETTOForced high voice
FALSETTOValli's vocal style
FALSETTOUnnaturally high
falsettoan artificially high voice
falsettoartificially high-pitched voice
FALSETTOFrankie Valli singing style
FALSETTOHigh tenor
FALSETTO...and so is this
FALSETTODoo-wop song high voice
FALSETTODoo-wop era feature
FALSETTOFrankie Valli's 4 Seasons singing style
FALSETTOTiny Tim, for one
FALSETTOYodeler's range
FALSETTOHigh part
FALSETTOTiny Tim, e.g.
FALSETTOArtificial high voice
FALSETTOFrankie Valli's voice
FALSETTOTenor's asset
FALSETTOArtificial voice.
FALSETTOYodeler's pitch.
FALSETTOPart of a yodel.
FALSETTOType of voice.
FALSETTOSinger of a sort.