The bazooka is a rare, novelty brasswind musical instrument which is several feet in length and incorporates telescopic tubing like the trombone. Often, bazookas are very simply constructed with scavenged materials like pipes and funnels. From its start within a lipreed mouthpiece which may be handmade or borrowed from another low brass instrument, the air column rapidly expands into a wider length of pipe which slides freely around a narrower length of pipe which itself terminates in a widely flaring bell.