As a vocalist, Shirley Horn was expert at lending subtle treatment to old jazz standards. She was also a fine pianist, and in this week's Jazz Library singer Christine Tobin discusses the American's intimate trio sound as well as Horn's work with some of the finest big bands of the 1960s. Taking time out to raise a family, Horn returned in the 1980s and 1990s to make some of her finest recordings, including the Grammy-winning I Remember Miles.