Simple and quick:
The currently active members of Pink Floyd (David Gilmour and Nick Mason) have released a new song featuring the singing of Andriy Khlyvnyuk of Boombox. It’s the first official release of new music from the band since 1994.
Gilmour has a daughter-in-law who is Ukrainian. He has Ukrainian grandchildren. What’s happening over there matters to him. So with the band they’ve set up a fundraiser.
There’s a lot said on the Youtube page for the video that you should check out: