Before I started college, my dad came to me one day and told me to sit down and plan my courses for the whole four years. I objected, of course, but it was the best advice, ever. I knew exactly what I needed to do and what the viable substitutions were, if a course I originally wanted wasn’t being taught that semester. Also, a got ahead in units, so I had priority in registration over students who were in my year.
I took my basic g.e. at community college during the summer, and had most classes count toward both g.e. and a minor.
I graduated in four years with a multidisciplinary major (Intl. relations) and three minors (business, spanish, music). Because the Bank of Mom and Dad was going to close if I took longer than that. I also worked part-time, but only earned enough for my personal expenses, not tuition.
Sorry for the big digression.
Bottom line: Plan your classes before you start. You can always fine-tune it, but HAVE A COMPLETE PLAN and you may actually reach your goal.
School advisors in serious programs like engineering will gladly furnish matriculation frameworks. A complex program like yours is trickier to plan.
Now you are ready to run a music business in Spain.
[Kidding a little! congratulations on your school success]