Thanks David! A very good point, there is little work looking at the acoustical properties of how something is sung (which is of course different to just the lyrics on paper). The voice is a very powerful instrument in its own right and singing a song in different ways will, I know from personal experience, give a different emotional resonance. ‘Over the Rainbow’ by Judy Garland is sweet and hopeful. By Eva Cassidy it is moving and, for me, heartbreaking. There is slight showings of an interest in the sung elements of song as opposed to the remaining ‘music’ in research – for example research has shown that the sung performance impacts on sing-along behaviour far more than the nature of the song itself. http:///news/pressrelease/?releaseID=911 Hopefully there will be more interest in this avenue in the future.
All the best,
In the 2000s, with the increased accessibility of computer technology and advances in music software , it became possible to create high quality music using little more than a single laptop computer .  This resulted in a massive increase in the amount of home-produced electronic music available to the general public via the expanding internet,  and new forms of performance such as laptronica  and live coding .  These techniques also began to be used by existing bands, as with industrial rock act Nine Inch Nails' album Year Zero (2007),  and by developing genres that mixed rock with digital techniques and sounds, including indietronica, electroclash, dance-punk and new rave.
Before I was saved, rock music was my life. A former rock guitarist, (and yes, I still play the guitar) I know the love for rock music people have. But I also know the source and effects of rock music. I have spent thousands of hours researching rock music. Music is very important in the spiritual life of a child of God. And the wrong music can spiritually destroy the child of God. I ask you to prayerfully obey, 1 Thess. 5:21-23, " Prove all things ; hold fast that which is good. Abstain from all appearance of evil . And the very God of peace sanctify you wholly; and I pray God your whole spirit and soul and body be preserved blameless unto the coming of our Lord Jesus Christ." We also have a Christian Rock: Questions and Answers page and a Bible Guidelines for Christian Music (link available at end), in which, we answer many of the questions readers have asked. We provide Biblical and documented answers to the following questions, and more: