The descriptive note comes from item 589 in :
Henderson, Alice H.
Henderson, Donald Gene
Carl Maria von Weber : a guide to research
New York: Garland, 1990, 385 p.
This is what Donald Gene Henderson had to say:
Brief survey of the instrumental works. Concludes that Weber's great contribution lay in the realm of tone color and in revealing the distinctive voice of each instrument.
© Donald Gene Henderson
(c) 2020. Frank Greene. All rights reserved.