Good afternoon

Hope you are fine... as per your query to become a singer or musician you can take BA in Music, you can take diploma certificate in Music it take 2 year for completion, if you want to do graduation then it takes 3 year for BA in Music. after this curse you may have opportunities music, cinema, OTT, broadcast, marketing, online media, digital games, and other fields. apart of BA Music(Bachelor of Arts in Music) you can go with Bachelor of Performing Arts (Music), Diploma in Music.

here is the list of top colleges where you can pursue these course:

-> Lovely professional University, Jalandhar
-> AAFT School of Music
-> Savitribai Phule Pune University
-> MIT, Pune
-> Mumbai University

For more information checkout given link below:
https://www.careers360.com/courses/articles/music-courses-after-12th-counar

Hope you found it helpful
All the best!!!