For quicker edits without a mouse, at the top of the rb window there is a box to type in the exact to and from points you want highligted to copy, or if you want to regenerate what I call the Wild Thing Players (that is that instrument part that is playing along so perfectly and then all of a sudden decides to go rogue with some bit of playing that makes absolutely no since whatsoever; this was helped by the force track to simple arrangement, but ever once in a while you still have an instrument that tries to be the star of the show.) you can then either cut them or copy and paste at a later time. Hope this helps

My Tunes

Psalm 57:7 My heart, O God, is steadfast, my heart is steadfast; I will sing and make music.