Is music allowed in Islam? (three questions)

In the name of God Salamu Alaykum Wa Rahmatullahi Wa Barakatuhu Hello everyone I want to know these: - Is listening to music allowed in Islam or not? - If it is not allowed, does it means that all types of song is Haram? - If it is not allowed, why some singers like Sami Yousif and Mahir Zain -who singing songs for Islam- are singing? does it means that Islamic musics allowed? Thanks for you. Dana.