The Musician's Toolbox: Thoughts on Teaching and Learning Music - 111 Inspirational Tools and Projects, By Diane and Nick Petrella. The Musician's Toolbox is an easy to read collection of motivational and inspirational ideas for musicians of all experience levels. It covers a broad range of topics on teaching, learning, performing, health and wellness and more; offers practical and thought provoking tools designed to springboard the reader to other creative areas.