Set Of Pipes Meaning

(idiomatic) Voice for singing.

Example: 1916, Elbert Hubbard, Little Journeys Vol. 7: Eminent Orators, "Savonarola":
  The old man taught the boy to play the flute, and together they constructed a set of pipes—the pipes o' Pan—and out along the river they would play.
1995, Waymon Wong, "Damone: ‘V’ for Vic-tory at Rainbow, his crooning still sends 'em swooning," New York Daily News, 22 Aug. (retrieved 25 May 2009):
  Since the 1950s, Vic Damone has always had a great set of pipes, but at 67, he's plumbing his songs with a maturity and grace that's even more mesmerizing.
2009, Darryl Sterdan, "Peaches pushing the boundaries," Jam! Showbiz at canoe.ca, 18 May (retrieved 25 May 2009):
  Peaches—who usually raps her lyrics in husky tones—also reveals she has one helluva set of pipes, belting out "Talk to Me" with enough power to give any disco diva pause.