Question: Hailing from different countries and styles, both Sigur Rós and Bayside perform under what same main genre?
Sentence (from "Kronos Quartet Plays Sigur Rós"): Kronos Quartet Plays Sigur Rós is a studio album by the Kronos Quartet, containing two "audience favorites," "Flugufrelsarinn" (by Sigur Rós) and "The Star-Spangled Banner" (trad., arr.
Relevant evidence: No