Sometimes, the best way for us to express ourselves, and particularly our emotions, is to do so through music. Many of the great musical masterpieces of history are reflective of a troubled or a moving time in a composer's life and their music was an outlet for them to express what they were feeling in those moments. The hymnody we sing in church here is certainly much the same. Although I would suggest, our hymnody goes a step beyond a writer expressing the emotions and feelings of their heart to a place where they are expressing the deepest words and thoughts of faith in the words and the music which we now sing.
This is why we pride ourselves, still today, in the singing of songs of praise and hymns in our worship. We're singing the songs of faith. We're lifting back to God the same words He's first given to us through the holy writers of Scripture. The hymns we sing help us in receiving and in turn expressing the Divine truth which the rest of our worship is gracefully giving us.