Rush: Caravan from Clockwork Angels The Decibel app is one of the first I ever downloaded. Pretty sure the ability to takes photographs of the noise producer is new.
Cool. I'd like to point out that sustained noise levels above 80db are considered to be a hearing/health hazard. You'd have to wear hearing protection to listen to this if you were at work.
Equinox by Bodhi Tree. This was a three piece that used to hang out in South Lake Tahoe, California a few years ago, playing a couple nights a week in McP's Irish Pub. They released a self titled CD, which I bought. One or two of their songs are available on YouTube. Some of the more interesting aspects of the band were the use of didgeridoo and the ability of one of the members to play two saxophones simultaneously. Good times.
Abba are one of those groups that have become serious classics. Some of their music is very easy to listen to, years after the fact. Presently listening to Enya - Na Laetha Geal M'Oige from Watermark.