Demob Happy are an English alternative rock band, formed in 2008 in Newcastle upon Tyne and now based in Brighton.

[9][10] The band co-own the Nowhere Man cafe in Brighton which is run by Marcantonio's brother Andrew where they also rehearse in the basement.

[14] The band released their new Tom Dalgety-produced single Dead Dreamers on 5 May 2017 via Atlantic Records imprint Taste & Tone.

[18][19] The band supported Jack White on the UK leg of his Boarding House Reach world tour in October 2018.

[20] On 2 April 2021, the italian rapper Caparezza announced a featuring with Matthew Marcantonio in Canthology, the first track of his album Exuvia.