Sad news for fans of Yes: Peter Banks, a founding member and the first guitarist of the band, has passed away.

His stellar work on the first two albums, back when Yes was much more of a psychedelic-rock band than the prog warhorse they became, was unforgettable. Banks’ genius was his expansive, free-flowing, jazz-inflected lines, as defining as was Steve Howe’s more studied, country- and classical-oriented technical prowess.

Band legend has it that it was Banks who came up with the name Yes, but only as a placeholder until they thought of something better.