Ljuva karneval! is a 2005 book about the work of Sweden's national bard, the 18th century poet and performer Carl Michael Bellman, by the Swedish literary scholar Lars Lönnroth. Bellman is the central figure in Swedish song, known in particular for his 1790 collection, Fredman's Epistles. Lönnroth, who has studied Bellman since the 1960s, aims to give an overview of Bellman's work, describing the essence of Bellman's art: giving a frolicking one-man performance, religious or profane, through adapted tunes, imitated crowd sounds and speech in different languages, and songs in varied genres. He distinguishes carefully between the art and the person of Bellman, who in his view was by no means as drunken and debauched as the cast of his Epistles.

Carl Michael Bellman was a Swedish songwriter, composer, musician, poet, and entertainer. He is a central figure in the Swedish song tradition and remains a powerful influence in Swedish music, as well as in Scandinavian literature, to this day. He has been compared to Shakespeare, Beethoven, Mozart, and Hogarth, but his gift, using elegantly rococo classical references in comic contrast to sordid drinking and prostitution—at once regretted and celebrated in song—is unique.