Guitar duets are often faced with the prospect of building a programme from lollipops: there's a great deal of attractive original music and numerous arrangements, but the proportion of substantial works in either category is small. Here is a faithful arrangement of one of Bach's keyboard masterpieces, the first of his six Partitas for keyboard, engraved by Bach himself and published as the first part of his Clavier�bung in 1726. Originally in the key of Bb, the transposition to D adapts the music to the range of the guitar with surprisingly little need for radical alterations.