Biography
There are at least two bands with name, Callow:
1. Callow was a hardcore punk band from Philadelphia, Pennsylvania that existed from 2012 to 2016. During their time as a band, they released an EP on cassette entitled Disappear Here and a split 7" with Jungbluth from Germany.
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http://wearecallow.bandcamp.com/
2. Callow is a two-piece art rock band from San Francisco, California. Since forming in 2009, the band has released two full-length albums, Orb Weaver and Blue Spells.
http://callow.bandcamp.com/
http://www.callowmusic.com/
Biography text from Last.fm, available under CC BY-SA.