[1][2] Since 2013, he has been a member of Johnny Marr's band, which he joined with Haven drummer Jack Mitchell.

Gronow appeared on the Mutineers' sole album, 2010's Friends, Lovers, Rivals.

Gronow has appeared on four releases by Johnny Marr: studio albums Playland (2014), Call the Comet (2018), Fever Dreams Pts.

The band debuted their single "Crossed Wires" (a song featuring New Order drummer Stephen Morris) in October 2020 and the song has also been featured on Chris Hawkins' BBC 6 Music morning radio show.

[4] Originally from Sidcup, Kent, Gronow moved St Just in Penwith, Cornwall, when he was three years old.