instruments

I love to create back-up tracks. I would like to see each instrument have a selection box like a "mute" button and a master mute button to turn off/on individual or groups of instruments during backup. I often record a tune and have the drums and piano stop for 4 to 8 bars and then re-enter...

I'm using this as backing music in a trio setting... one guitarist and two or three singing. I would like to be able to control the volume of the three individual instruments by inserting commands in the chart. That way I can bump the bass up in parts, drop the piano volume when some is singing...