 In all cases, before a song title may be broadcast on a telephone MOH, said use must be approved and licensed from BOTH the "song title" copyright owner (if it is NOT in public domain) and the "mechanical" copyright owner.It is generally known within the on-hold industry that some performance rights societies, with regional offices and staff, both monitor and prosecute persons and businesses that infringe on the copyright of title holders in their libraries.ASCAP and BMI are both aggressive about this, from time to time.