Allegretto's Costume - In chapter 6, in one of the treasure chests in "to coda ruins".
Beat's Costume - Located inside a treasure chest where you battle the bread gang boss.
Polka's Costume #1 - In chapter 4, in one of the treasure chests of the second-to-last area in the lament mirror.
Polka's Costume #2 - After beating the game, in chapter 1, head over to polka's house after frederic joins polka. After the cutscene, check polka's bed for the costume.
Unlock Scrapbook - After beating the game, finish the events in "the church of ezi" and beat the boss "great ezi" again.

Score piece locations:
Find the following score pieces in the corresponding locations:

1 - Agogo Village - small shrine by march's house
2 - Ft. Fermata - chest after boss fight
3 - Cantabile Inn - boat outside of inn
4 - Woodblock Groves - chest in north center
5 - Andante - storage room near sullen melody
6 - Andante - pillar before the first bridge
7 - Baroque Ship - bedroom in the east hallway
8 - Baroque Ship - barrel after frederic cutscene
9 - Dolce's Ship - chest on 4th floor
10 - Baroque Castle - bedroom on 1st floor, east
11 - Baroque Castle - clock in 2nd floor room, east
12 - Baroque Inn - room on 2nd floor
13 - Baroque - snowman near entrance
14 - Sharp Mts. - 2nd point, hole on the right
15 - Sharp Mts. - fireplace in lodge
16 - Wah Lava Caves - Middle 3, chest
17 - Ritardando - bakery
18 - Ritardando - bakery
19 - Mandolin Church Catacombs - chest in east section
20 - Baroque Tavern - barrels after dolce #3
21 - Celeste Forest - from merchant
22 - Cowbell Heights - bottom of cello tree
23 - Mysterious Unison - chest on 4th floor
24 - Mysterious Unison - chest on 9th floor
25 - Mysterious Unison - chest on 12th floor
26 - Tenuto - play SP 24 w/ easygoing flat
27 - Heaven's Mirror Forest - from squirrel in boss area
28 - Forte - 2nd floor of bar
29 - Forte - outside of inn
30 - Forte - from old man near castle, only if you spoke to granny in Ch.4 in baroque inn
31 - Baroque - talk to woman in lower house, then help man in sharp mts.
32 - Cabasa Bridge - play SP 19 with disappointed note, chapter 7 only

New game +:
To play a new game+, complete the game and load its saved data to begin a new game with all obtained score pieces, party levels and a hero's crest. The enemies and bosses will be much stronger.

Easy gold:
To earn easy gold, do the following: After gaining control of Beat and Alegretto, enter the sewers. Use Beat's vivid shot skill to take pictures of the enemies. Move Beat beside the target and take pictures until you get 12 photos. Go back to the surface and sell them. Repeat as desired. Tip: Take pictures of the Sewer Boss's full body with Retto beside it to earn 1000 gold.

Mysterious Unison achievement:
In the last desert area in chapter 7, head east to reach the Oasis. There is an item and large door. After the battle with the ruined body boss, you will receive a hero's crest. Use it to open the door and unlock the achievement.