A devastating explosion rocked the city of Beirut last month and killed nearly 200 people. Non-stop recovery efforts have been underway since then. And now musicians are making their own contribution. From Lebanese pop star DD Foxx to Arabic Rai singer Khaled to musicians who survived the blast in Beirut, artists are supporting those suffering in Lebanon and their community of musicians. But some within the industry question the ethics of releasing tribute tracks. The World’s Bianca Hillier reports.