TubeRadio is an online music utility which allows you to search for artists or song names and then create a list which you can save. In simple words it is a virtual music player running YouTube videos with added functionality of managing music, song names and find more about them.
Though not necessary but if you want to crate multiple play lists and save it forever, It is a good idea to regsiter along with them. This way you can play your list any number of times without searching again and again.
Though registration is simple I would have loved to see Facebook or Twitter connect here. Thisy way I would have updated my status and made it more usable.