Oh dang, I didn't know plastic keyboards can produce booming, auditorium-filling sound covering a broad spectrum of frequencies, somehow perfectly replicating the audio produced by striking padded hammers against carefully-tuned/tensioned strings, modulated by subtly-actuated dampening or sustaining pedals. Cool! Good to know. Why spend $20k on the real thing when I could just get a $150 keyboard?! No clue why orchestras even bother with all that expensive wood and brass stuff, now that you point out this astonishing fact.