I love the idea of the Temperance Angel playing the guitar...
...an instrument that embodies all the passions and emotions of the human soul, but transformed harmoniously by wood and gut string into a high art form. Not for nothing did Crowley call the Temperance card, Art.
I like the Buddha story told by Rachelcat - it inspired me to look at Robert Place's Buddha Tarot Temperance card, which shows Gautama having over-fasted, being offered a large bowl of rice & milk by Sujata. He divided the young woman's gift into 49 parts that sustained him during 49 days and allowed him to regain his strength. That image has a backstory, very like the story Rachelcat told, in which the god Indra appeared to Gautama a while before, when he was almost dying from his fasting, and started to play a three stringed lute, of which only the middle string was usable - one other being too loose and thumping, the other too tight, and broke. Gautama realised that if he wanted to become Buddha, he needed discipline; but too much discipline would break him before he achieved his goal of liberation. "To proceed, one had to embrace the middle path, nurture the body, and find motivation that was deeper than the ego."
Again, I believe what these stories show is not a stifling of passion, but its fertilisation with another element to create a third - that is the true middle way.