While we're on the subject of music, have a look at this interview with Keith Getty. If you don't know who Keith Getty is, you might be more familiar with some of his hymns. He's responsible (along with Stuart Townend) for such great modern hymns as 'In Christ Alone', 'This the power of the Cross', 'Speak O Lord' and 'See What a Morning', among others. You can find lyrics and some audio samples on his site (click on 'Hymns').
Here he talks to Adrian Warnock (of adrianwarnock.com) about such things as writing modern hymns, inter-generational worship, and the role of theology in the songs we sing in church. The interview is well worth watching.
Many thanks to Adrian Warnock. (His blog's worth reading too.)