Developer Robb Böhnke hacked Siri to rap Biggie’s “Hypnotize” to compete in the Music Hack Day Project.
How does it work?
SiriProxy is used to intercept the communication with Apple’s servers. Based on your song request, Notorious Siri then sends your choice of Notorious B.I.G.’s Hypnotize and an a-cappella rendition of Queen’s Bohemian Rhapsody to the device (the latter requiring for iPhones 4S).
Siri’s speech synthesis is synced to the beat using the timestamps obtained from the Echonest API which were then manually tweaked, to smooth out delays in the text-to-speech engine.
Check out the video after the break…