I am 61 years old, retired, love music and would like to be able to do some casual performing with my two grandaughters, ages 10 and 7. I have been considering something along the lines of a Yamaha PSR-S900. I don't play keyboard very well. I do play a little guitar and I'm working on learning the fiddle. I'm wondering if the 900 will help me or will I get bogged down trying to program? Any help would be appreciated.