In performances, he was supported on stage by a group consisting of his sister Sigrún Birna Pétursdóttir (backing vocalist), wife Árný Fjóla Ásmundsdóttir (dancer), and friends Hulda Kristín Kolbrúnardóttir (backing vocalist), Stefán Hannesson (dancer), and Jóhann Sigurður Jóhannsson (dancer)—known as "Gagnamagnið".