Does a person bear the sin for having introduced others to music after his repentance?

All praise is due to Allah, who has blessed you with repentance. We ask Him, the Almighty, to keep us and you firm upon the truth. If you are sincere in your repentance to Allah the Almighty, then the actions of others in committing sins will not harm you, even if you were the cause of them. You must strive to invite these and others to Allah the Almighty, enjoining upon them what is right and forbidding them what is wrong. After that, no one's burden will harm you, for one who repents from a sin is like one who has no sin.