Answer: TUBA

AnswerCrossword Clue
TUBAOompah band need
TUBAOompah brass
TUBABig band wind
TUBAHeavy wind
TUBALow wind
TUBABass brass
TUBAOompah maker
TUBASousaphone cousin
TUBASousaphone or helicon
TUBASousaphone, for one
TUBAKiddie lit's Tubby, for one
TUBAVery big wind
TUBAHeavy horn
TUBAOompah band instrument
TUBAOompah sounder
TUBAOktoberfest band horn
TUBAPart of an oompah band
TUBALowest-pitched instrument
TUBAIt goes oom-pah-pah
TUBASousaphone's cousin
tubaa brass wind instrument
TUBAMarching band member
TUBABig, band instrument
TUBAOom-pah-pah instrument
TUBALatin for "trumpet"
TUBABig band member?
TUBABig horn
TUBAOompah instrument
TUBAIts oompah has oomph
TUBAHefty horn
TUBADixieland-band instrument
TUBABig brass
TUBABig band tote
TUBAEuphonium relative
TUBAMarching band instrument
TUBARhythm instrument
TUBABrass band member
TUBABrass band instrument
TUBAMarch instrument
TUBAThe score for "Symphonie fantastique" has a part for it