Ever dream of becoming a rock star? Your dreams can now come true with the Jam for iPhone app. This app allows anyone to sing into the microphone and turn their voice into an original musical masterpiece. After picking a genre, tempo, and speed, the app adjusts the voice recording to the tune of the genre you picked. Within a week of launching, it rose to the number 1 spot on the free music app list and reached a quarter of a million users.