Benny and Bjorn from ABBA are still very active in the music business, they co-wrote the musical Chess, and they continue writing and scoring all manner of things, and of course, dong the book for the ABBA based musical Mamma Mia.
Patty Smythe still records occasionally (she did that gawdawful duet with Don Henley about five year ago) and does fundraiser and charity performances in the NYC tri-state area with some frequency.
Sinead O’Connor put several new albums after the papal picture incident, the most recent was last year and was critically acclaimed. And deservedly so, might I add.
George Michael has a single out in the UK right now, with a high controversial video featuring GW Bush, Tony Blair and his wife, Cherie, in some compromising characterizations and positions.
I don’t know if four years is long enough to characterize a young man like Bill Berry as having reutred, never to return to the business. He could easily change his mind and the remaining members of REM have stated that if he ever decides to return to the band, he will be welcomed with open arms.
And for the record, I’m no fan, but Celine Dion was never retired, and never claimed to be. She did “goodbye” performances because she planned and scheduled to take a more extended period away from performing and recording than she had since the beginning of her career (whether you count that as when she started performing at 12 or became a star in the late 80s) but she always said that it was only a break so that she could be with her husband, who was battling cancer at the time, and have a baby, which she did, and enjoy her wealth and her family and her life for a while, which she has.
I watch way, way, way too many Behind the Music episodes.