They were described as "combining elements of prog, alt, hard, and classic rock into a loud, but accessible mix," and list the Smashing Pumpkins, Fleetwood Mac and Led Zeppelin as musical inspirations.

[1][2] Those Mockingbirds began by playing shows across the Northeast of the United States, and promoting the band at places like shopping malls and parking lots.

[2] They released a limited edition compact disc of BETA: alpha during a show with Smoking Popes and Girl in a Coma, at Mexicali Live in Teaneck, New Jersey on May 6, 2011.

The self-released EP contained an acoustic version of No Symmetry's "We are the Antidote," "The Bloodiest Gums" and a cover of the Nico Blues' song "Living Proof.

"[11] The commercial FM radio station WRAT ran a week-long promotional campaign that culminated in the debut of the song "The Difference Between Love and Addiction" a few days before it was made available online.

Those Mockingbirds performed at the Northside Festival on June 14, 2012, and in July they opened for Armor for Sleep's New York City reunion show at Irving Plaza.

[14] Those Mockingbirds' ten-track debut album, Penny the Dreadful, was released on July 1, 2014, and they promoted the record with music videos for "A Ballad from Hell," "How to Rob a Bank" and "Destroy My Love."