Here are the tracks used for Switched at Birth episode 126, Tree of Forgiveness, which aired on September 24, 2012.

Artist: Dar Williams
Song: Book of Love
This song is heard when Toby isn't receptive to Nikki and is still annoyed with Kathryn.
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Artist: Donora
Song: Champion
This song is heard when Toby and Bay hang the bike expo sign.
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Artist: Antietam
Song: Better Man
This song is heard when Bay and Zarra talk about John's wall and paint Bay's car.

Artist: Classic
Song: I'm a Problem
This song is heard when the police show up and Bay's cover is blown.

Artist: Ocha La Rocha
Song: Armadillah
This song is heard when John tries to make amends with Bay.
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Artist: Il Travioso
Song: Lead Me Forward
This song is heard when Bay explains her moniker to Zarra. They're cool again.

Artist: Lea Thompson and Lucas Grabeel
Song: The Earth Stood Still and Hard Times Come Again No More
This song is heard when Nikki jams, Kathryn sings and Toby joins in.