A Swedish sex toy company LELO has developed a sound-responsive vibrator named Siri 2 that can be used for both pleasure and vocal training.

Not only does the gadget react to ambient noise – be it your lover’s voice or your favourite pop song – but it can also be used to “tone” the voice box, claims LELO.

Siri 2 (we wonder if Apple has anything to say about that) is a small but powerful palm-held massager which has a small microphone that responds to the volume of sound around it and vibrates accordingly.

The device also has eight pre-set vibration patterns inspired by different musical genres: reggae, jazz, techno, classical and others.

LELO was inspired to create the musical vibrator after the company noticed that the first version – Siri 1 – was being used by singers to exercise the vocal chords.