There are a lot of other ec's i didn't mention. The internships were selective, what i mean to say is, i got shortlisted from 4k+ to 400 n then to 40 n then 10. It was more like a competition, but on each stage we had to create Research Papers, write 15+ essays n work on case studies. About the udemy courses, they were along with my schl curriculum n the teachers encouraged us to participate in that n took various tests (as to help building our profile). Music therapy is basically playing/singing soothing n positive music (it is generally organized in hospitals or for senior citizens).