Cheats > Game > Cheat: 236

Hear every song
Make sure you cannot carry anymore items when Totakeke gets to town on Saturday nights. Talk to him and he will play a song. Afterwards, he will notice that you do not have room for the Aircheck. He will tell you to return later. Talk to him again, and he will play a different song. Repeat this until you have heard a song that you like, then drop an item. Talk to him again and request the song you enjoyed.