Leprous is a Norwegian
progressive metal band formed in 2001 in
Notodden,
Norway. The band gained prominence as the backing band for former
Emperor frontman
Ihsahn's live shows. Ihsahn has, in turn, contributed to several Leprous albums as a vocalist (on "Thorn" from
Bilateral and "Contaminate Me" from
Coal) and as a co-producer for
Coal.