Just Mustard is a five-piece experimental rock band from Dundalk, County Louth, Ireland, formed around 2015.
Their lineup is: Katie Ball (vocals), David Noonan (guitar + backing vocals), Mete Kalyon (guitar), Rob Clarke (bass), and Shane Maguire (drums).
Their sound blends noise rock, shoegaze, post-punk and electronic/trip hop influences.
They released their debut album Wednesday in 2018, which was nominated for the Choice Music Prize.
Their second album, Heart Under (2022), marked a stylistic shift toward a darker, more abrasive sound and gained them further recognition, including international touring.