The 7 PM and 9:30 PM concerts will feature the duo's music as well as never-before-heard songs and new arrangements.

"The Kerrigan-Lowdermilk Songbook," published by Hal Leonard, features sheet music to 17 of the duo’s most popular songs, including "Run Away With Me," "My Party Dress" and "Say The Word."

Playbill went into the rehearsal room with Lowdermilk to try out new material with Broadway stars Josh Young and Ariana DeBose in this exclusive Playbill video: What the Stars Are Singing — Reinvent Your Audition With These Need-to-Know Songs

Kerrigan and Lowdermilk made their Off-Broadway debut in 2006 with an adaptation of Henry and Mudge, still touring nationally. In 2011, they released their first album, "Our First Mistake," which charted at #1 on the iTunes Singer/Songwriter chart. Their musical credits include The Unauthorized Autobiography of Samantha Brown, Tales from the Bad Years, The Woman Upstairs, Wrong Number, The Freshman Experiment, Republic, Unbound and Flash of Time.

Tickets, priced $30-$40, and information are available at 54Below.com.