Judging from the medley in "Make Your Own Kind of Music", there was certainly no shortage of material for them to record in 1971; imagine an album of just Richard and Karen at the piano! It's a terrible pity they had to spend so much of their valuable time on the road performing. How many concerts were they doing a year? 3oo or so? Ridiculous workload for artists - they weren't machines. Little wonder they both suffered physically and psychologically as their careers progressed.