Boegli is a young company which specialised in making watches in which musical boxes are integrated. Based on Poljot 2612 movement they also developed an alarm watch where instead of the standard hammer buzzing on pin, the alarm activates a musical box. The movement itself does not have an alarm spring barrel. It is replaced by the music box spring barrel. 

Instruction manual:

Basic instructions are identical to Poljot movements (see Poljot). But alarm crown here is used only for setting the alarm hand. Winding the "alarm" is here replaced by winding the music box and activating/deactivating alarm is also done through the music box crown (in position 0 - winding the box and alarm plays music; position 1 - alarm off).