The circuit is assembled on the cone of a 4" speaker. The microcontroller, an 8 pins SOIC, is suspended in center with 30 AWG wires going out from it to
circumference. An octogonal wooden rim glued to the speaker support the components and the spider web.

On power on a tune is played then the microcontroller fall asleep. In sleep mode it draw less than 1 µA.

Pressing resset button wake up to play the next tune in the list then fall asleep again. At each press of the reset button the next tune in play list is executed. At end of list the pointer is reset to beginning.