Music played a central role in the service at the Temple in Jerusalem. While sacrifices were offered, the Levites played a variety of music and sang songs of praise to G-d. Yet, while traditional synagogues sing songs of praise and prayer, they generally do not accompany the songs with music. 

What is the role of instrumental music in Judaism? Why was it used in the Temple in Jerusalem, but generally not used today? Can a community add music to its prayers if it wishes?

A fascinating discussion about the role of music in Jewish prayer.