Great to know ( All of the Above), and maybe [b]mono[/b] is derived from Mono a Mono, or, monkey to monkey (in Spanish).
At least, the Tarzan Yodel is more effective in Mono, instead of Electronic Stereo. It's the mono recording from 1938 by Johnny Weismuller (please correct me on all counts if I'm wrong, avole).
REgards,
b50
PS- you can look up "Weismuller Tarzan Yodel" in YouTube.
