Fergusson College

Yes, with 82% marks in boards, you are eligible for admission.

http://fergusson.edu/article/admission_2018.html
You can get the info from here.

In which college are you planning to apply? Admissions are open for mostly all the colleges.

Yes, you are eligible to apply in Fergusson College, Pune.

Visit this official link:
http://www.unipune.ac.in/dept/science/chemistry/chemistry_webfiles/entrance.htm

Hello Priya,Frankly I have not understood your query. But to still clarify, one can not take admission to two courses at the same time in college. This is so since you can not attend two different classes at same time. But what you can do is to take admission for BA in a regular college and pursue your passion for music privately. Visharad that you can obtain, is considered as equivalent to graduation.