Banana Fairy - In Street Performance mode, the Banana Fairy will appear after doing a 25 note combo, but goes away after 10 more notes in a combo (after 25). She always does this until you miss a note. However if she casts magic on your player, you will win three coins.
Clap roll - When you do a clap roll, just blow into the clap sensor. It will let you get major coinage. This does not damage the sensor.
Dixie's Notes 10 - Get a Gold DK rank on all Monkey Duet arrangements to get Dixie's Notes 10.
Dixie's Notes 11 - Get a Gold DK on all solo Monkey arrangements to get Dixie's Notes 11.
Dixie's Notes 12 - Successfully complete the Six-Song Set in challenge mode to get Dixie's Notes 12.
Dixie's Notes 2 - Collect at least one of each badge to get Dixie's Notes 2.
Dixie's Notes 3 - Buy all the Gorilla arrangements from the Shopping Mall to get Dixie's Notes 3.
Dixie's Notes 4 - Get a Gold DK rank on each Gorilla duet arrangement to get Dixie's Notes 4.
Dixie's Notes 5 - Get a Gold DK rank on each solo Gorilla arrangement to get Dixie's Notes 5.
Dixie's Notes 6 - Successfully complete the Full Set in challenge mode to get Dixie's Notes 6.
Dixie's Notes 7 - Get a Gold DK rank on all Chimp Duet arrangements to get Dixie's Notes 7.
Dixie's Notes 8 - Get a Gold DK rank on all Solo Chimp arrangements to get Dixie's Notes 8.
Dixie's Notes 9 - Successfully complete the 12-Song Set in challenge mode to get Dixie's Notes 9.
Donkey Konga sound sets - Have a saved game file from the original Donkey Konga to import sound sets from that game.
Echo effect in Freestyle Zone - Successfully complete over 325 songs to unlock the echo effect in Freestyle Zone.
Extra coins - Sometimes during a song in Street Performance, you can find a flashing barrel note. Do not miss it, as you can win a blue coin, which is worth a large amount of coins.
Na Na Hey Hey Kiss Him Goodbye song in Freestyle Zone - Successfully complete the Full Set in challenge mode to unlock the Na Na Hey Hey Kiss Him Goodbye song in Freestyle Zone.