Michael Feinstein — American Musician born on September 07, 1956,

Michael Jay Feinstein is an American singer, pianist, and music revivalist. He is an interpreter of, and an anthropologist and archivist for, the repertoire known as the Great American Songbook. In 1988 he won a Drama Desk Special Award for celebrating American musical theatre songs. Feinstein is also a multi-platinum-selling, five-time Grammy-nominated recording artist. He currently serves as Artistic Director for The Center for the Performing Arts in Carmel, Indiana... (wikipedia)

He's a world-famous name to people who care about his music, but there are many people who have never heard of George Gershwin and those numbers increase.
The Gershwin legacy is extraordinary because George Gershwin died in 1937, but his music is as fresh and vital today as when he originally created it.