Perhaps a short story will give my opinion. I was at a local guitar shop testing out some guitars I apsire to purchase. There was a young man - very young - in there playing on a nice Taylor. He did an absolutely perfect rendition of some Led Zeppelin song or other (I've never been a big fan of theirs). He looked up at me with a look on his face as young men will sometimes have when they are appealing to their elders for acceptance. I said, "That was absolutely fantastic. You played it perfectly. Now, give it a try the way YOU think it should sound." He did - and it was a marked improvement. Not because the song or the music was better, but because for a moment the music and the musician were one and the same thing. The musician expressed forth from his own essence something beautiful - and it was music. His young friend with him said, "That wasn't the right way to play it." I said, "Perhaps not, but it was beautiful."
We need to keep alive these songs, but we need to express them as parts of ourselves. Where musicians blend and the notes express something more than wavelengths of sound. They express blended spirits, and essence of where the song came from at first and how it has changed through the telling from other hands and voice.
Sometimes, we are lucky enough to hear a song we do not care for done by someone else and it is magic. Jose Feliciano's version of The Doors "Light My Fire" is such an experience for me. Some of All1Song's versions on YouTube are like this. Mekidsmom shared a song from her bathroom recently via Facebook (I do not hang out in bathrooms hoping for songs) - and it took a song that has always left me flat on the radio, stripped it down, and gave voice to something beautiful and transcendant.
THAT is how musicians give tribute, meager as it may be in some of our cases. Precise replication is the realm of technicians. It is also tributary, no question. The effort and learning and practice that goes into something like that is significant and deserves our attention and appreciation. It is more than I can do, and I am jealous of the talent. But that does not change its technical nature. Musicians MUST express music from within themselves. And when it comes from within themself, even if it was first expressed by another it cannot help but change and morph and become something new.
- Zurf