Music

No, you can't include both these subjects in your top 4 subjects as you can only choose only one optional subject in your top 4 marks evaluation.

No, you cannot include music and physical education in top 4 subjects for admission in BA (Hons.) in history at Zakir Husain Delhi College (evening).
For admission in this college, you need a minimum of 45% in 10+2 examination in top 4 subjects which include one language and three best elective subjects.

Yes, as per my knowledge you can do B.Ed. It does not need any kind of teaching experience for you to take admission in the course.

Yes, you are eligible for MA in vocal music.

You can do MPA in Tabla from MIT Vishwashanti Sangeet Kala Academy - MIT VSK, Loni kalbhor, Pune. For more information, click here:
https://www.shiksha.com/arts-fine-visual-performing/music/course/mpa-in-tabla-mit-vishwashanti-sangeet-kala-academy-mit-vsk-Loni-kalbhor-Pune-278152

Try checking the university's website. There is a file with all the cutoffs of all the colleges in general.

Hi Naved, I will advice you to directly contact the college for the information about the scholarship. They will brief you whether they give scholarships or not. If yes, then what is the procedure

Yes, you are eligible for MA in vocal music.

Yes, of course, there is Junior Research Fellowship in music also as UGC conducts NET entrance for the music subject also so you can give exam for the same.
Good luck.

https://www.shiksha.com/arts-fine-visual-performing/music/colleges/colleges-india
Follow this link for the colleges which you can choose to pursue MA in music.