I don't have any issues with their anime tie in songs, I quite liked a few of them actually...
It's their pvs, lives and concerts that always eventually turned me away
. Too over the top and cheesy for my taste but obviously there are a pretty large audience that enjoy it and I admit they're a very well produced group, financially and creatively speaking... or that's how it seems to me lately at least.
Keeping on topic
[youtube]5mfyCI82lWM[/youtube]
Nothing beats listening to calming musics after a stressful day