Songza is an online music site similar to Pandora. What I really enjoy about Songza is the Music Concierge. For example. If I connect to the link in the morning I normally choose a playlist that is "safe for work". Other choices include current music with no lyrics, oldies, etc. As the day goes on, the front page changes. Here is the current front page as of the time of this post:
There are many listening options which are appropriate for different situations.
This site is a keeper!