From a chinafake plane by Wen Sheng, part of a larger 3-song chip. Specific Love Bugs imported to Japan (such as mine) used presumably extras of this chip they had lying around instead of a normal WS chip. There is an ongoing search for this song in the chinafake discord: https://discord.gg/QSHzmmE5RP …and also a thread in the FMM discord (though I have no invite for that currently)