Music is haram

The Messenger of Allaah (peace and blessings of Allaah be upon him) said:
 Among my ummah there will be people who will regard as permissible adultery, silk, alcohol and musical instruments. 
Narrated by al-Bukhaari (5590). See also: al-Silsilah al-Saheehah by al-Albaani (91).
Shaykh al-Islam Ibn Taymiyah (may Allaah have mercy on him) said:
This hadeeth indicates that musical instruments are haraam; this includes all types of instruments.
Majmoo al-Fataawa (11/535).