Seth Rudetsky Presents a Mystery Guest Singing From The Sound of Music for Not Since High School

Radio host, author, musician, actor and Playbill.com personality Seth Rudetsky presents Not Since High School, an Aug. 24 concert at 42West that will benefit the music program at MS 245, a New York City public middle school. Guests including Sierra Boggess, Christine Ebersole, Keala Settle and Jose Llana will perform tunes that were the highlights of their school days. Here, a special mystery guest (you'll see why!) rehearses a tune from The Sound of Music. Watch Sierra Boggess rehearse a Guys and Dolls favorite.

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