The Derulo iOKi App has two modes for people to play, an animated performance edition that triggers scores similar to music video games as well as the classic karaoke view of Derulo song videos with the bouncing ball following the lyrics. Through a master mobile mixing board, players can modulate vocal and sound effects a number of ways including pitch, iOKi tune, reverb, delay, distortion and vocoder.

Once users create their own version of a tune, it can be shared, via the iOKi community or Twitter, and others can then provide their own renditions to post and swap. Budding karaoke stars can also submit their latest Derulo song interpretation to YouTube, complete with Derulo still pictures. And, iOKi fans can even vote for their favorites.

"We are always excited when we can find innovative ways to bring our artists closer to their fans," commented Jack Isquith, senior vice president Digital Music, Warner Bros. Records. "Jason Derulo and and gridMOB seemed a perfect match from day one - Jason loves technology and interacts with his fans constantly, and gridMOB gave him a great canvas to explore his vision for the ultimate Karaoke app. "

"We're thrilled to offer Jason Derulo fans a chance to belt out his hits anytime and anywhere," said Les Borsai, founder of gridMOB. "They can not only improvise his songs with our karaoke studio tools but also post their own versions through the iOKi community. It's a great way for them to enhance their entertainment experience in an entirely new and creative way."