Here's a tip==
If you google ITunes, open it and select Radio from the Menu, it opens to all
genres== I often select Classical, which then opens to tons of radio station
sub list choices; "calm radio" offerings are my frequent choice esp.
" piano and guitar solos" great-- no commercials,
no lyrics= I always choose specifically instrumental stations.
In the initial list of genres you can find ambient, new age, jazz, techno,
and many, many more.
I keep the icon on my desktop, and open it first thing when I get to
school. Haunting and eerie ones for the spooky season.