Listed are music tracks that have been tested on hardware and verified to sound wrong or odd, either due to a bad rip or because they just sound that way. Refer to this if you're developing an emulator and find a music track that sounds wrong, before you look for a problem in your emulator.
I've encountered many GYM soundtracks that contain bad/undocumented commands. The following have bad commands in almost every track (but are playable if the bytes are simply skipped): Crack Down, Gaiares, Darius 2, King's Bounty, Shining in the Dark, The Steel Empire, YS3 - Wanderers from Ys, Jewel Master.
NSF tracks have been compared to in-game music on a NES playing the game cartridge.
| Game | Track | Description |
|---|---|---|
| Battletoads | Title | NSF rip lacks DMC samples |
| Blaster Master | Ending | Slight click around 0:03 and 0:13 |
| Castlevania, Castlevania 2, Castlevania 3, Deadly Towers, Flying Warriors, Goonies II, Metal Gear, Snake's Revenge, Wizards & Warriors, probably others |
all tracks | Notes don't play long enough, envelopes fade too quickly. NSF rips don't properly write $80 to $4017 |
| Fester's Quest | Game Over | Double drum-like sound at 0:03 incorrectly plays as tone in NSF rip due to it rewriting low bits of period before sweep has a chance to alter upper bits |
| Megaman | Fire Man Stage | Triangle bass line stutters at beginning |
SPC tracks have been verified by loading them into the SPC-700 unit on a SNES using a custom development cartridge.
| Game | Track | Description |
|---|---|---|
| A Ressha de Ikou 3 Super Version | Bankrupcy | Glitch sound at beginning |
| Ace o Nerae! | Change Court | Bass guitar pops excessively |
| Actraiser | North Wall | Click in echo at beginning |
| Aero the Acro-Bat 2 | Fort Redstar: Act 2, Title | Main instrument is slightly scratchy |
| Albert Odyssey 2 | Sorceress of Glacier | Bass sample has slight click (especially on left channel) |
| Arcana (Cardmaster) | Journey, others | Clicks at beginning |
| Barbarossa | Ending | Click at beginning |
| Donkey Kong Country | Fear Factory | Click at 0:41 on right side and same place when song repeats |
| Donkey Kong Country | Cave Dweller Concert | Click at 1:11 on right side |
| Earthworm Jim | What the Heck? | After a minute or so some bass notes seem to cut off early |
| F-Zero | Mute City | Chorus comes into song about 2 seconds after beginning |
| Ganbare Goemon 2 | Stage Clear | Weird sound at beginning, like bad sample data |
| Kaizou Tyoujin Shubibinman Zero | Aquarium | Samples have slight clicks |
| Metal Marines | Engine Sound | Engine sound that changes pitch then ends |
| Romancing SaGa 3 | Trade For Defeat | Echoing sound at beginning |
| Shin Megami Tensei | Demo | Cuts off abruptly at 0:15 |
| Shin Megami Tensei | Dream, Ending, others | Lots of clicks when notes start |
| Shodai Nekketsu Kouha Kunio | most tracks | Echoing click one second in |
| SimCity | Menu | First bass note sounds interrupted |
| Super Turrican | Level 4-2 | Click-like sound on voice 5 mixed with bass line |
| Super Turrican | most tracks | Some samples have slight clicks |
| Tengai Makyo Zero | Let's Play! | Glitch tone at beginning |