a tangent to the lined-vs-unlined thread, and a followup to a comment by Steve that both he and Michael find they bend/slide some notes into tune to compensate for inaccuracies/limitations in the equal temperament system; what particular instances do you find this necessary? on my defretted Hohner acoustic (=lined) I find that the sixth interval often sounds flat, and find the upper note has to be slid slightly up past the line. similarly on fretted the sixth interval sounds flat. a bassline that bugs me in this area is "from the edge of the deep green sea" by the Cure, in which seventh, sixth and fifth intervals are played between the A and G strings - D on the 7th fret of the G string against G on the A string sounds flat. even if the D is played on the D string it still sounds flat- are there particular chord progressions in which anomalies like this tend to occur?