SoundChannel question

Hi,

I’m currently making an upgrade game for Android. I’ve already implemented some upgrades and I thought music was a pretty sweet upgrade.

**The Idea:
**You buy multiple layers of music. For example, in the electronic music genre you first buy the bass, then the synth and then the wobbles or whatever.

The Question:
What is the best method of doing this? I want to make it so that if you buy the second layer if perfectly merges with the first. Even when you buy the second layer 1 minute after the first layer. The way I have in mind is I have 3 SoundChannels and they all start playing when you buy the first. The 2nd and the 3rd SoundChannel are muted at first and will be unmuted when you buy them.

Is this the best method or is there something better?

Thanks in advance!

Regards