The Guild M-75 or Bluesbird, as it was known, initially featured a chambered body design, but by the time of this advertisement in 1975, it had a fully solid mahogany body. It had also been upgraded with a master volume control and phase switch, making a very playable, and now highly saught electric guitar. The mid 1970s Bluesbird came with chrome (M-75CS) or gold (M-75GS hardware), Guild HB-1 humbucker pickups and the Muller adjustable bridge.
It was clearly aimed at the Gibson Les Paul market, with it's comparable controls, construction style and materials.. "before you buy a similar looking guitar try the Guild M-75. Guild costs you a lot less, yet gives you features the other doesn't have including a phase switch and master volume"
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