The overwhelming majority of scholars consider music to be Haram, based on the following verse:
"And of mankind is he who purchases idle talks (i.e. music, singing, etc.) to mislead (men) from the Path of Allah without knowledge, and takes it (the Path of Allah, the Verses of the Quran) by way of mockery. For such there will be a humiliating torment (in the Hell-Fire)". (Surah Luqman 31:6)
Abdullah Ibn Mas’ood used to swear that the meaning of idle talk was singing. This view was held by Ibn Abbas (RA) and other Sahabah as well. Ibn Mas’ood used to say that music is to the hypocrisy as water is to a plant. The scholars are agreed that when singing is accompanied with music, then the prohibition is even stronger.
The other major proof is the Hadith reported by Al-Bukhari with a partial isnad (mu’allaq):
"From among my followers there will be some people who will consider illegal sexual intercourse, the wearing of silk, the drinking of alcohol, and the use of musical instruments as lawful. Allah will destroy them during the night...and will change the rest of them to monkeys and pigs and they will remain so until the Day of Resurrection".
This Hadith was narrated with a connected chain of narrators by other scholars of Hadith such as Al-Ismaili, Abu Dhar, Abu Nuaim, and Al-Tabarani. It is authentic.
Singing and the playing of the daff (a large tambourine like instrument) is permitted on special occasions like the Eids and marriage.
Information From
Fath Al-Bari vol. 10 (The Book of Drinks, Ch. 6)
The Noble Quran
The Islamic Ruling on Singing and Music