His clarinet concerto Adrift on the Wine-dark Sea was composed in 2017 for fellow Syrian-American musician Kinan Azmeh and the Deutsches Symphony Orchestra.
In composing this work, Roustom was inspired both by Homer’s Odyssey and by the fate of Syrian refugee Doaa Al-Zamel, as "both embark on a perilous sea journey in an attempt to reach home, or a place of refuge.
It had its world premiere in 2019, with Michael Barenboim on solo violin and the Barenboim-Said Academy's Boulez Ensemble, conducted by Lahav Shani in Berlin.
To this historical piece, Jeyasingh added Roustom's contemporary music in a second act, using Monteverdi's baroque instrumental textures and rhythms as "points of departure."
Further musical elements chosen by Roustom were the Middle Eastern social dance dabke and the recorded voice of Syrian mezzo-soprano Dima Orsho singing in Arabic.
It is quite striking how relevant this poem is today.Compositions Publication Roustom has composed music for several movies, among others Shadow Glories (Ziad H. Hamzeh, 2001), Encounter Point (Ronit Avni, Julia Bacha, 2006), Amreeka (Cherien Dabis, 2009), Budrus (Julia Bacha, 2010),[11] The Iran Job (Till Schauder, 2012)[12] May in the Summer (Cherien Dabis, 2013)[13] and Speed Sisters (Amber Fares, 2015).