The Toronto Symphony Orchestra has created brilliant listening guides for audiences:
Hannah Chan-Hartley is the managing editor and musicologist at the Toronto Symphony Orchestra (TSO). She oversees the production of the orchestra’s various printed programmes, from designing layouts and writing and editing content, to the creation of its intriguing ‘listening guides’ with graphic designer Gareth Fowler.
A deft mix of text and graphics, the guides can be read while listening to the performance, their layout visualising the thematic progression of the music, indicating the keys in use, what instruments feature and, using morse code-like notation, their duration.
Check out the graphics themselves on the Creative Review or percussionist Chester Englander's Twitter feed.
That said, since childhood I've really enjoyed Peter Schickele's approach: