The actress will...
Judd Apatow will produce the film, which will be directed by John Carney - the man behind hit 2006 film Once.
Scarlett Johansson has somewhat of a musical pedigree - she released an album of Tom Waits songs, Anywhere I Lay My Head, in 2008, and a year later (09) she teamed up with Pete Yorn for an album of duets.