I find that good-quality popular music must be original for me to enjoy it.
I have rarely heard the popular style of church music where I cannot name the original popsong which has been slavishly copied with new lyrics by St. John the Evangelist.
Also, contrary to the apparent belief of many new church music composers, congregations rarely deal with an alternating 5/4 and 7/8 meter particularly well.
That is not to say that popular music has no place in the church: just this last Sunday, I turned up to play for 10:30 am Mass and arrived in time for the end of the 9am service, which is the Children's Mass and the recessional was the old favourite "I'm gonna let it shine!" with a spectacularly good, jazz piano accompaniment. I couldn't help but join in the singing, and the congregation burst into spontaneous applause for the pianist's efforts and the conclusion.
It is the newly written music which I find to be mostly superficial, derivative and detrimental to congregational involvement in the music, which is what the entire post-Vatican II movement is centred around.
It's easier to turn a few heads with an appropriately unexpected modulation to the relative major than to recruit an insensitively overbearing drummer to make everyone flinch on the off-beat.
Thanks
Theodopolis