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Ever the polymath, Zappa played just about any guitar he could. But for Hot Rats and later axe-centric, improvisational explorations (eg Shut Up And Play Yer Guitar) he went for Les Pauls.

His Hots Rats Goldtop is the talking point, modded with a third pickup just in front of bridge and numerous extra switches. What did the buttons do? Made it sound mad, most likely.

It was auctioned in 2006 for £70,000.