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The Independent Online
Music master In the review of the Guitar Wizard in the Real Life section ("The axeman cometh...", 18 July), it was stated that the device could not play major 7th, diminshed or augmented chords. It can play these, as well as all the major and minor chords, one dominant 7th chord and 4-3 suspensions - allowing all music to be played using it.

Pictures by... In the feature on Trellick Tower in last week's Sunday Review, the photographer's credit should have read Graham Trott.