I think a big part of college life and the transition from school to college is about the social life and forming new friendships,hobbies/interests etc.
I want him to be on an equal footing with his peers though and be able to join in activities and social events,especially as he is doing music as one of his subjects which is based a lot on perfoming at local venues,and Im guessing most on the course will be musically inclined and go to gigs etc in their spare time.
Just really want him to be able to embrace college life and make the most of it,rather than having to make do and scrimp all the time.
I understand, my parents felt the same about me, but it is possible to do both I worked my way through uni as well (I had 3/4 part-time jobs at any one time, making my 2 during college seem very tame, lol) and in those 5 years of post-school education I was scrimping & saving all the time - never once had a moment I wasn't skint. I did plenty of socialising though... I was in student clubs and wrote for student media, I did voluntary work and youth projects, I hung out with friends, I had horsy stuff going on, etc - fitting that stuff in around studying and work was very difficult, but possible, because my heart was in it.
I wasn't suggesting your son shouldn't have a social life at all, that would be very unhealthy! Just that if you are a student who is tight on money then you have to be (a) more picky about what your social life entails and (b) be willing to go without if necessary. Some types of social activity cost more than others! My clubs, volunteering etc were very social activities but they were also free - if I were someone who liked going for nights on the town I think I may have had a problem!