SHAFAQNA – The Grand Ayatollah Sistani answered a question about new style lamenting (Noha) and eulogy recitation (Maddahi).
Question: What is the exact ruling on music in any condition or any sound with or without any song or new style laments or eulogies?
The Grand Ayatollah Sistani: There is no problem with songs which are not special to frivolous occasions. But it is Haram if sound/melody is frivolous and with inappropriate words, and according to Wajib precaution, it is not allowed for reciting eulogies and similar to them. And the music which is played in frivolous parties is Haram for lamenting, otherwise it is not Haram.
Source: PERSIAN SHAFAQNA