"Sahih Al-Bukhari Volume 7, Book 69, hadith #494v
Narrated Abu 'Amir (raa) or Abu Malik Al-Ash'ari (raa) that he heard the Prophet (sallallaahu alayhi wa sallam) saying, "From among my followers there will be some people who will consider illegal sexual intercourse, the wearing of silk, the drinking of alcoholic drinks, and the use of musical instruments [ma'aazif] as lawful. And (from them), there will be some who will stay near the side of a mountain, and in the evening their shepherd will come to them with their sheep and ask them for something, but they will say to him, 'Return to us tomorrow.' Allah will destroy them during the night and will let the mountain fall on them, and Allah will transform the rest of them into monkeys and pigs and they will remain so till the Day of Resurrection." note: Here Rasulullah (sallallaahu alayhi wa sallam) has mentioned music with drinking of alcohol and fornication (zina) which are a MAJOR (Kabair) sin