Neil Young returns with original music with Crazy Horse. Keith Emerson returns to the prog-rock glories of his time with Emerson Lake and Palmer. Black Country Communion, however, is busting up — but they left one last terrific album.

A star-stuffed stop by Jefferson Starship at the Roswell UFO Festival offers new insight into the legends of Jefferson Airplane, the Dead and CSN, as well — along with a powerful reminder of that era’s deep sense of musical community.