I loved Kirsty MacColl from her early records on, and it was such a sudden death - she was only 40 with two teenage sons. Her mum set up a justice campaign but died in her 90s without much of a resolution. Two years later, Joe Strummer of the Clash was only 50 when he died suddenly.
I'm sad about lots of others, David Bowie, Lou Reed - more recently Nanci Griffith (and less well known here, I think, John Prine - an early casualty of the COVID pandemic - and Guy Clark).
After Bowie's death I bought a ticket for a Marianne Faithfull gig - she was about the same age and I was worried I might not get another chance. I'm glad I took the opportunity, though she lived for a few more years. I also saw Kirsty MacColl live in the 1990s in Leeds, and Nanci Griffith and Guy Clark in 2006.