The Swell Season is a folk rock duo formed by Irish musician Glen Hansard and Czech singer and pianist Markéta Irglová. "The Swell Season" name is derived from Hansard's favourite novel by Josef Škvorecký from 1975 bearing the same title. Their debut album, released in 2006, carried the same name.

The duo rose to prominence following the success of the 2007 film Once, directed by John Carney, in which the pair starred depicting a dramatise…