While the Great American Songbook should always be cherished as some of the finest music ever written, few things are more frustrating to the dedicated jazz listener than another jazz vocalist paying tribute to Ella, Billie, Sarah or any of the other peerless singers of yesteryear. Thankfully, there are plenty of musicians out there doing their own thing, though not always receiving the credit they deserve. Gretchen Parlato, a rising artist who most certainly belongs on this list of seekers, offered her perspective during a recent interview with DCist.