To accompany the documentary film JOAN BAEZ: HOW SWEET THE SOUND, soundtrack producer Mark Spector assembled this hourlong compilation album. The film itself is biographical, with only snippets of performances, but here full-length tracks have been drawn from the albums JOAN BAEZ IN SAN FRANCISCO, ONE DAY AT A TIME, BESSED ARE..., CARRY IT ON, and LIVE AT NEWPORT, as well as the BBC documentary JOAN BAEZ IN CONCERT and the NBC TV special HARD RAIN. Previously unreleased are a couple of tracks recorded at Club 47 in Boston in 1958 ("I Never Will Marry" and "Barbara Allen") and four concluding tracks recorded on Baez's 2008-2009 tour supporting her album DAY AFTER TOMORROW ("Diamonds and Rust," "Love Song to a Stranger," "Day After Tomorrow," and "Jerusalem"). Thus, the album functions as a concise Baez best-of, stretching from her earliest recordings to her most recent performances to date (a stretch of more than 50 years) and tracing her development from a traditional folksinger to an interpreter of political songs by the likes of Dylan (who duets with her on his "I Pity the Poor Immigrant"), with her biggest pop hit, "The Night They Drove Old Dixie Down," and signature songs such as the original "Diamonds and Rust" included. There's a lot more to Joan Baez than these 15 selections, of course, but the collection is a reasonable summary with some rarities to tempt collectors.