Ok, this feature was available for Songsterr Plus users for quite some time already, but it looks like we forgot to cover it in our blog. Fixing this right now.
Focus Mode is a Mixer button allowing one to focus on the current track by rising it's volume and lowering the volume of all the other tracks. Basically, it is a soft alternative to "Solo". It can be quite useful when you learn your part and would still like to hear all the other instruments playing "in background".
Actually, this was a very popular request from bass players. Bass part is often hard to hear when all the other tracks are playing. Adjusting the volumes was a boring routine bass players had to follow for each song.
Hopefully, this small feature will make your learning experience a bit easier.