Tubeoke is a very interesting free service that lets you watch YouTube music videos, and also sing along with them. Tubeoke shows you lyrics of the YouTube music videos, and you can sing along the video.
Tubeoke is extremely easy to use. The website opens up with a search box. Just enter name of your favorite song, artist, or band in that, and Tubeoke will search for those in YouTube.
Tubeoke shows search results from YouTube on the results page. From that, you can select any video that you like. Tubeoke will immediately open that video. Tubeoke will also show lyrics of that song on right side of the video. So, you can watch the YouTube video and sing along with it.
Tubeoke is like converting YouTube into a basic Karaoke player. For a full featured Karaoke player, you can also try KaraFun.
I really like Tubeoke in terms of ease of use, and sheer fun of it. There are some things that I would love to be added to it, like highlighting the lyrics that are being sung at the moment, improving search itself (I searched for “Summer of ’69” but didn’t get any result), and expanding the lyrics database (I stumbled across a few songs for which lyrics were not available).
Those are all minor, though. The service itself is quite good, is like easiest to use Karaoke player I have ever come across.