[Bruce Campbells Chin]

Yes wound itself through genres and expectations, sprouting into a tree of impossible harmonies, soaring falsettos, and rhythmic complexities that few dared imagine.

Anderson himself rarely sang falsetto. He generally sang with full chest voice, though in a high tenor/alto range. Chris Squire - who had a fine voice of his own - sang falsetto occasionally when singing backup. Steve Howe sang...well, pretty badly, lol.

[dfwgator]

Squire’s backing vocals are a crucial part of the Yes sound.

That’s why Drama still sounded like Yes, even with Trevor Horn’s vocals.