Poprzednie występy 2002 — Wczoraj
Mattias works on opera stages, in churches and concert halls all over Sweden. Among the roles he has sung are Escamillo in Carmen, Silvio in Pagliacci, Danilo in Lustige Witwe, Belcore in l'Elisir d'amore and Nachtigall in Meistersänger. Mattias has a big repertoire in church music, and has sung baritone and bass parts in all the mayor oratories and cantatas,such as Bachs' Johannes- and Matthäuspassion, Mass in B minor, Weihnachtoratorium; Händels' Messiah; Mozart Requiem; Brahms' Deutches requiem; Fauré Requiem etc. The concert repertoire includes songs in Swedish, german, french,english and russian.