There's a number of different bands using this name: 1. A scandinavian folk band from Finland, formed in 1994.
2. A viking metal band from Italy.
3. A viking metal/black metal band from Russia.
4. A black metal band from the Ukraine.. 1. Gjallarhorn is a folk band from Finland. The band's music echoes in a modern way the ancient folk music tradition of Scandinavia with mediaeval ballads, minuets, prayers in runo-metric chanting, and ancient Icelandic rímur epics.