Chrome: If you're looking for some new music to play, but you don't feel like thinking too much about it, Instant Music is an extension that sits in your toolbar and plays through popular songs in different genres. To get started, all you need to do is grab the extension.
You don't need to sign up for anything. Once it's installed, just pick a genre, the charts (Billboard, iTunes or Melon) you want to use, and then Instant Music starts playing songs from YouTube. It's fast and incredibly easy to use. You can search for and play songs using the favourites menu, but it's a little clunky to use if you want to listen to more than one song.