Lambert James Bartak[1] (April 8, 1919 – November 3, 2013) was an American organist, best known for playing at the College World Series.

Bartak was the full-time organist for the NCAA Division I College World Series at Johnny Rosenblatt Stadium in Omaha, Nebraska.

Manager Glenn Ezell joined the fray and, during the argument, Bartak played the theme song from The Mickey Mouse Club.

Bartak retired following the 2010 College World Series, ending his career with the ballpark he loved, Johnny Rosenblatt Stadium.

[5] TD Ameritrade Park, when it opened in 2011, ushered in the era of Omaha, Nebraska, native Jerry Pawlak as Bartak's successor at the organ.