- Edited
No commitment yet. I'm busy practicing music with a group until the summer so my music is not limited to piano pieces.
The assumption for learning 40+ pieces is to add variety to your playing which is ok. I met people (self-learners) who learned to play a few pieces they like listening to but way above their level. They're happy repeating the same pieces over & over. The people who have a teacher would get into a new piece when piece they're working on reached a certain level.
I can easily read through 10 or 15 absolute beginner pieces out of an Alfred's or Faber 1 book but they are way below my level. Otherwise I'd be learning 1 Bach Prelude & Fugue in 3 - 4 weeks which is something I enjoy playing but slightly above my level. 1 piece a month would only add up to 12 pieces a year.