Smule is launching a new version of its karaoke sing-along app that takes advantage of the unique processing power of the iPhone 5S to produce effects like the sound of someone singing in a shower.

If you like singing karaoke with a whole gang of people, there’s now a special social network for you. San Francisco-based Smule is announcing today that it is adding group video for its Smule Sing!

Calling all Train fans: It's a big day for mobile developer Smule as it debuts its first national TV ad for its popular Sing! Karaoke app. The ad spot centers around the San Francisco pop band's… By ...