There is more than one artist with this name:
1) A one-man black metal band hailing from Sweden.
2) A singer-songwriter from Japan.
3) An all-girl punk band from Latvia.
4) A heavy metal band from USA.
5) The representative of Yugoslavia in 1982 Eurovision Song Contest.
1) Aska is a one-man black metal band hailing from Kristianstad, Sweden. The man behind the dark, melancholic sound of Aska goes by the name of Pisk.

Read more about Aska on Last.fm.