.........well,
andy7000, I just read an article at Canna's website and there is evidence of 'classical' music(classical because of the 'pure' tones, no guitars, drums) being very benifitial to a plant, and especially if you folular feed as the vibrations open up the stomata........... and supposedly too much is not good; where that line is drawn I have no idea.........but they say more than 3 hrs may be too much because of dehydration(perspiration) from the stomata being open too long. There is a bunch of other technical info on it there too, about the amino acids role w/music, etc........
I found this at canna-hydroponics(
http://www.canna-hydroponics.com/images/stories/canna_downloads/Cannatalk3_EN.pdf ) and you do need to be a member to have access to thier chat, downloads, etc.....
So I will now go turn down my rock music in there......lol