[1] He has also been a member of the indie rock bands Fools for April (with C Lanzbom), The Wellspring (with Talia Osteen), and Distant Cousins (with Duvid Swirsky and Ami Kozak).

Rosenblatt and Lanzbom briefly collaborated as Fools for April, recording an album together called The Voice is Inside (2009).

While touring with Fools for April, Rosenblatt met singer-songwriter Talia Osteen, with whom he formed the folk rock duo The Wellspring in 2009.

Their music has appeared in the film This Is Where I Leave You (2014); in the shows Graceland, Criminal Minds, and Reign; and in commercials for Lift and Macy's.

[2] In May 2016, he appeared in a video with actress Reese Witherspoon celebrating the one-year anniversary of her Draper James clothing line.