A Jordanian singer cancelled his participation in a special concert featuring both Jewish and Arab musicians after receiving death threats, Israel Radio reported Monday. Basel Hori cancelled his participation Monday afternoon in what was supposed to be a fraternal gathering for Jewish and Arab artists in the Jaffa port. The event - scheduled to be held on the seventh night of Passover under the banner of co-existence and tolerance - was to be boradcast on radio 88-FM and Kol Yisrael Arabic.