Joni Mitchell cover group Big Yellow Taxi, are set to release a new album of Joni's songs, including three unknown tracks. The album, titled "Unknown and Famous Songs of Joni Mitchell" will be their second, after 2002's "A Tribute to Joni Mitchell". Inspired by the reactions on the 3 songs that Joni never released herself, the group has started to record a new album including a dozen more tracks.

The artists, singer Christina Friis and guitarist Henning Olsen, have been together for four years covering the 60s icon with fresh and innovative interpretations of her songs.

One Internet reviewer from South Carolina wrote: "It's always a bit daunting to attempt an entire album full of her challenging songs, but Big Yellow Taxi certainly prove themselves up for the challenge. Christina's vocals glide through these melodies, some of which require a strong vocal range and are not tried by too many, and of course the REAL thrill here is the inclusion of three Joni-penned songs that Joni never released herself."

The duo declares that they have a "personal fingerprint on Joni's songs".