I bought a small piano accordion thinking that it would act as a substitute piano...as Foolestroupe says many do...but I have found it to be a totally different instrument and it opens new possibilities for playing in all sorts of places, situations and totally different styles. I AM a piano player who happens to have an accordion but as long as I don't profess to be an accordion expert, and am not to proud to bow to the superior knowledge and experience of those who are, I can still enjoy playing it and if I play it sensitively (yes it is possible, lol!) I don't think I annoy too many people with it. It doesn't have to be EITHER piano OR accordion after all! :-)