These resources are designed to support composing for particular musical instruments. So far this includes flute, oboe and saxophone. In the resources, BCMG musicians demonstrate traditional and extended techniques and how to notate them, as well as giving listening suggestions for each instrument.
Guidance on composing for saxophone. BCMG saxophonist Kyle Horch talks on video about composing for oboe: the range, traditional and extended techniques and composing idiomatically for the instrument.