CMAT is a performer. The Irish singer-songwriter has a colossal voice, and she knows how to use it. She also has tons of ideas the kind of personality that bursts out of a laptop screen. She dances. She does bits. She gets into charming interactions with her bandmates. She makes faces that communicate and maybe exaggerate the feelings of whatever lyric she’s singing. She just knows how to do this shit. On Tuesday night, CMAT gave her first-ever American television performance, and she put all those skills on display.
