Mstislav Rostropovich has passed away.
The Guardian has a full obituary, tributes from James MacMillan, Steven Isserlis and others, and a selection of recommended recordings.
He was a pervasive musical figurehead, a by-word for inspiration and idealism, a last link with Prokofiev and Shostakovich, and an unforgettable presence with or without his cello.
UPDATE, 8.15 Saturday 28 April:
A press release from 98.7WFMT, Chicago's Classical Experience, informs us that the radio station is paying tribute to Rostropovich today by broadcasting recordings from its archives of his cello performances and conducting. In addition, the station is airing voicemails and reading emails from listeners recounting memories of the world-renowned musician, who visited Chicago many times during his lifetime. Rare interviews have also been posted on wfmt.com.
There's a very touching tribute by Richard Morrison in The Times. He says, among other things: "...the music from Rostropovich’s cello wasn’t just beautiful. It was a transcendental message of hope, surging and irresistible, from one soul to another – his to yours. If I live to be 100, I don’t expect to hear another sound that touches me so deeply."
Clive Davis posts a video of Rostropovich playing Bach and some pertinent political moments from the New York Times's obituary.
UPDATE: Sunday morning: Opera Chic has a series of tribute posts and some very interesting links to news sites etc.