Lars Wivallius (1605-69) was one of Sweden's most talented poets in the 17th century, but he was also quite a rascal. Many a year behind bars sparked poetry glowing with the desire for freedom. These words were sung to well-known tunes of the day. Renowned musicologist Jan Olof Ruden has reconstructed melodies from the period, and Ack, Libertas! Features some of these melodies fused with the poetry of Wivallius. Martin Bagge is a singer, musician, composer and arranger who made a name for himself as a faithful interpreter of 18th century music. Mikael Paulsson is an accomplished lute player, arranger, and conductor. Ensemble Mare Balticum, founded in 1989, is based in southern Sweden and specializes in Early Music.