The blog of pianist Stephen Hough has been mentioned here before, but it deserves another plug. Hough writes in very readable style about music, but also whatever is on his mind, from religion to pastry (he admits to a bit of a sweet tooth). And since he's spending some time in Minnesota soon, for a series of concerts with the Minnesota Orchestra, who knows what might show up on the blog?
UPDATE, May 28: The Minnesota blog postings have begun to appear.
One artist whose web site I consult often is Angela Hewitt. She keeps a diary of her travels as she performs around the world, and I do mean "the world" as last year she completed her Bach tour of WTK parts I & II. Just go to www.angelahewitt.com. Enjoy and Thanks