In piano notes by Charles Rosen, he has a different viewpoint. Professionals should be those people who physically can not stop themselves from the act of playi

In piano notes by Charles Rosen, he has a different viewpoint. Professionals should be those people who physically can not stop themselves from the act of playing. If you aren't obsessed with the act of touching your instrument, in his view you won't have what it takes to continue drilling and technically improving. For Rosen, who I'd say is a tad over serious, fun doesn't matter to professionals. After playing 20 years myself, I must say I'm not nearly as obsessed as the 5 or so pianists I know who play for a living. I play folk and pop, classical I'd say is merely a hobby to me, therefore I'm a scientist in my day job.