Supplied with programming song book. In this system, a note key is pressed, and then a time key, such as a quarter note, etc. A long process. After that, the song will be erased when you turn it off. There is no way to save. I attached it to an adult tricycle designed for two people. Bought a small 12 volt battery. It connects easily to an iPhone and I can play anything an iPhone can play. It sounds tinny, but has a good volume for our purposes. The wires seem a bit short even for my simple setup. I don't know how to install it in the car. This is a fun toy. This is a toy, not a horn.
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