So music communicates two things to us: ideas and emotions. In lyrical songs, the ideas are obvious. For those songs are language put to music and we dually comprehend the music and the words.
But music has these spectacular self-expressive ways of making us feel. We feel different when we hear a song in a minor key than when we hear a song in a major - "Jingle Bells" vs. "Phantom of the Opera." The music itself can make us feel despondently hopeless or full to the bursting - or happy or sad or angry or worshipful or exultant or depressed or confused or wondering or excited.
Music can also trigger memories and resulting emotions. For example, I can never hear Natasha Bedingfield's "Unwritten" without thinking of my fourth grade English project when we created a book based on this song and then presented it to our parents with the song playing over and over again in the library background. That's a mostly happy memory. But I still have a sense of melancholy at hearing "Because He Lives" because that song played a big part around the time my grandmother passed away.
Music has a rich emotional benefit. And our infinitely creative God has given us that. Do you treasure that gift? And do you listen to music that fills you with God-glorifying emotions?
There is an emotional fullness of music. And one day we will get to enjoy and appreciate that fullness fully when we sing around the Lamb's throne with His people. What a day that will be.