Music

First of all study well for your boards, because all the questions that will come for your upcoming entrance exams will be based on your main subjects. Buy books for English language and General Test which is available online as well as in book shops . 

Read them partly every day for some 1 -2 hours.

Forms for CUET UG will come in February to may .

Don't worry you will get updates .

The colleges that you can apply for.
University of Delhi
Jawaharlal Nehru University,
Banaras Hindu University
Aligarh Muslim University
University of Calcutta
Madras University
Bombay University
Lucknow University
Annamalai University
Osmania University
Punjab University

Yes, you can but the rules for it vary from university to university. Generally, the candidates must have a Bachelor's Degree in Music with a minimum 50% aggregate score in the final examination. There is no age limit for the course. The admission process can be either entrance exam-based or merit-based.

Ideally, you must pursue MCA .Interest can be fulfilled anytime with other means but try to plan that think which you like as well as possible and is your strength.

Also you can explore about-

• IIT JAM
• CUET

Yes, as Candidates who have completed intermediate or Diploma in elementary education and graduation are eligible to apply for CTET.

In case of candidates applying for the post of KVS PRT Music,  a valid CTET certificate issued by the CBSE on or before the last date of application is an essential eligibility criterion 

Any candidate having qualified B.Ed Programme recognised by the NCTE is eligible to appear in TET/CTET.