Oh, just Russia's greatest composer messing about with an expensive new toy.
We filmed some musical instruments in slow motion - now's your chance to see what really happens to a xylophone when you hit it.
So, we got hold of a camera that shoots in slow motion. We also managed to find some musicians from the Orchestra of Welsh National Opera at Classic FM Live. Can you see where we're going with this?
We started with the string section:
Looking for some lovely cello vibrations...
Cello in slow motion
Then we got a bit obsessed with the harp:
Harp in slow motion
Hammering on a xylophone looks quite cool:
Xylophone in slow motion
And check out these piano hammers in action:
Piano hammers in slow motion
Finally, we investigated the brass section...
Work those fingers, tuba guy.
Tuba in slow motion
And the trumpet, of course, looks majestic slowed down:
Trumpet in slow motion
Oh, and the trombone.
That slide action. Mmm.
Trombone in slow motion