there are a lot of topics to be discussed when it comes to music...comes to music...

there are a lot of topics to be discussed when it comes to music...comes to music...
there are a lot of topics to be discussed when it comes to music...comes to music...

there are a lot of topics to be discussed when it comes to music...comes to music...
it comes to music 谈到,提到
但提到/谈到音乐时,有许多话题可以讨论.