On the Subject of Piano Keys
What do you get when you drop a piano down a mine shaft? A flat minor.
                    See Appendix A for indicator identification reference.
 See Appendix B for battery identification
                    reference.
 See Appendix C for port identification reference.
 See the next page for piano/keyboard
                    reference.
                
- A piano keys module will present with 3 musical symbols in the top indicator and a 12-note keyboard to input with.
 - Each rule consists of one or more required symbol(s) and optional further requirements based on the bomb casing.
 - Follow the list of rules down until one matches the criteria for the module; then execute the sequence of notes listed.
 - A failed attempt will require re-entry of the entire note sequence.
 
| Required Symbol(s) | Further Requirements | Note Sequence, Song | 
|---|---|---|
| b | Last digit of serial number is even | Bb Bb Bb Bb Gb Ab Bb Ab Bb Final Fantasy  | 
                    
| c or # | 2 or more battery holders | Eb Eb D D Eb Eb D Eb Eb D D Eb Guiles Theme  | 
                    
| n and U | (No other requirements) | E F# F# F# F# E E E James Bond  | 
                    
| C or T | RCA port is present | Bb A Bb F Eb Bb A Bb F Eb Jurassic Park  | 
                    
| B | SND indicator is present and lit | E E E C E G G Super Mario  | 
                    
| m or U or c | 3 or more batteries | C# D E F C# D E F Bb A Pink Panther  | 
                    
| b and # | (No other requirements) | G G C G G C G C Superman  | 
                    
| C or m | Serial number contains a 3, 7 or 8 | A E F G F E D D F A Tetris Theme A  | 
                    
| n or T or B | (No other requirements) | G G G Eb Bb G Eb Bb G Empire Strikes Back  | 
                    
| (No requirement) | (No other requirements) | B D A G A B D A Zelda’s Lullaby  |