Bands used to ‘break’ on Letterman — now they’re recreating late night on YouTube

When CBS ended “The Late Show With Stephen Colbert” earlier this year, it also shuttered the program’s robust music offerings — a major blow for artists whose television platform was already dwindling. Performing on late-night has historically been a unique avenue for musicians hoping to access new audiences — think of a rising Chappell Roan on “The…