Siciliano has worked with Herbert on several of his projects including Herbert, the Matthew Herbert Big Band, and Doctor Rockit. The pairing began with 1998's
Around the House with Siciliano providing "sultry vocal work". Other Herbert releases that she has contributed to are 2001's
Bodily Functions and 2006's
Scale. On
Bodily Functions she contributed vocals to the entire album and her singing on
Scale has been called "sumptuous". She also provided vocals on "Summer Love" from the 2000 release
Indoor Fireworks by Matthew Herbert's Doctor Rockit project. She is featured on "Simple Mind", which has been called "the coolest track" from the 2001 Matthew Herbert Big Band release
Goodbye Swingtime. She has also toured with Herbert's big band. ==Other collaborations==