"C-Jam Blues" is the collaboration project recorded by violinist Marta Sierra with Yorgui Loeffler in Barcelona (studio Micro-cosmos produccions): On the album "C Jam Blues", Marta plays standards from the swing era with the famous gypsy jazz guitarist from Strasbourg, Yorgui Loeffler. Accompanied on rhythm guitar by the guitarist's son, Magnio Loeffler, and by Parisian double bassist David Gousset, the two exchange scorching bravura, creating magical and musical conversations in a fantastic album of fourteen swing-style tunes. They play the well-known Elllington tunes "C Jam Blues" and "It Don't Mean A Thing", but also Morgan Lewis' "How High the Moon". They also incorporate more modern gypsy jazz tunes from the 1950s and into the 1970s, such as Tchan Tchou Vidal's 'Dolores' waltz, the populars genre-classics 'Swing Gitan' and 'Limehouse Blues', adding a Brazilian touch in Luiz Bonfá's ballad 'Black Orpheus'.