How about Fluteloose?
Cello Young Lovers (The King and I)?
or Take That Flute Off My Bass (ouch)

Tim Timpani (Mary Poppins)
Toot Sweets (Chitty Chitty Bang Bang)
The Party's Oboe (Bells Are Ringing)

Way to hard for me this pun lark!

A Cockeyed Organist (South Pacific)??

Paul Hannigan's gone quiet!

Owz about these:

My Favourite Strings (Sound of Music)
Moog Glorious Moog (Oliver)
Get Me to the Church on Chime (My Fair Lady)
I've Grown Accustomed to Her Bass
Woodwind It Be Loverly (Naff!!!)
Standing on the Cornet (Most Happy Fella)
Tom-Tom, Dick or Harry (Kiss Me Kate)
You've Got To Piccolo Pocket or Two (Oliver)
Mr 'Cello'phane (Chicago)

Do I win the prize???? Pleeeez... Gimme, Gimme.

Eh?

What no Pwize?