Callahan has been played over 10 times on NTS, first on 17 January 2016. Callahan's music has been featured on 10 episodes.

There are at least 3 bands that go by the name Callahan:

A post-hardcore/metalcore band from Vancouver, Canada.

Bio from Myspace in 2009: "When we last saw our heroes, they had just completed phase one of imminent global domination. In their calling card Don't Say A Word, Callahan delivered a statement of intent of the shape of things to come, and with their debut single Cover Story Glory, they delivered an anthem that has echoed across the country.

Bands however have never made their name from…