They do yodel-- some of them on command.

Here is a sad basenji noise (not my dog):
http://www.youtube.com/watch?v=TE14qtEyY8I&NR=1

A BUNCH of them howling:
http://www.youtube.com/watch?v=ww4ly...eature=related

One singing along with the Godfather music-- some of themr eally like to sing along with music:
http://www.youtube.com/watch?v=2rW2I...eature=related

This is more like the sound my dogs make:
http://www.basenji.org/old/maleyod1.wav

Mine do more of the crowing than actually singing for prolonged periods.