Credits: Jack Walker, Kasaneyoko, The Zenith Serene, Delta Parallax, Excalibur624

Note: Any item which has "To be confirmed" in the Notes section should be taken with a grain of salt.

Caravan Hope for Freedom, Danger Attraction (Area H), Ragnarok, Many Other Z4 Tracks

Roland SR-JV80-02 "Orchestral" / SR-JV80-99 "Experience" / SRX Orchestra

Cool Water (Remastered), Freesia (Remastered), Labo (Remastered), Yggr Drasill (Remastered), Bunch of Other Remastered Tracks

Zero 1, Zero 2, Zero 3, Zero 4

Plugsound Box + (Roland SC-88Pro / SR-JV80-09 Session)

Zero 1, Zero 2, Zero 3, Zero 4

The second oscillator is disabled, along with any FX. Ridiculously compressed in-game. Both samples when reduced to 11KHZ sound identical, so it is difficult to say which one was used.

[Korg Trinity / Korg N364 / Korg NS5R] / Korg Triton / Korg M1

The in-game patch number indicates that the Trinity patch was used. It's worth noting though that this patch exists on many Korg synths, with only minor alterncations.

Z4 Title Theme, Queen of Hurt, Cannonball Hard Revenge, Other Z4 Songs, Crash III (Remastered), Kraft (Remastered), Straight Ahead (Remastered)

Credits Theme, Fake (Vs. Seraph Copy X - Final Battle), Double Mega Merge, Some Others...

While the sound is correct, the patch number suggests the M1 was not the source they used. The M1 uses patch number 37 (indexed from 1) whereas the game uses patch number 40, suggesting some kind of GM compliant patchset was used. Of note is that a Korg M1 can be seen in a picture of Yamada during the development of ZX Advent.

Fragile Border (Remastered), Drifting Floe (Remastered), Sand Triangle (Remastered), Through the Lightning (Remastered), High Press Energy (Remastered), Trap Phantasm (Remastered), Brilliant Show Window (Remastered)

Doomsday Device, Through the Lightning, Overdrive, Area K, Bullet Drive, Soul Ablaze

The ZX patch number indicates the Trinity patch was used. Regardless, the two patches are for all intents and purposes identical, as both are a very simple square wave.

Departure, Resistance Force, Cool Water, In the Wind, Stage Z, Trap Factory, High Press Energy

Ippo Yamada is known to have owned a Jupiter 6 during the development of the games. However, Plugsound Box is also used in other places. Furthermore, a similar patch exists on the JV-1080, GM 082 Saw Wave. While it is similar, it is not the same and the Jupiter and PSB patch is much closer.

Plugsound Box + (Roland SR-JV80-07 Super SoundSet / Roland SC-88Pro)

Destiny (Original+Remastered), Path to Truth (Remastered), In the Wind (Remastered)

Ice Brain (Remastered), Z1 Intermission Theme (Remastered), Bunch of Other Remastered Tracks

Roland SR JV80-99 "Experience" / SR-JV80-02 "Orchestral" / SRX Orchestra

To be confirmed. There is one iconic hit used in the Zero games. It appears to be an amalgamation of many sounds. Much investigation is required.

Final Count Down, Omega Missile, Power Bom, Z2 Boss Theme, Falling Down, Rockin' On

Rockin' On, Mountain Voyage, Z2 Multiplayer Loadout Theme, Platinum, Through the Lightning, Brimstone, Cinq Ville, Misty Rain

Sleeping Beast (Original+Remastered), Whisper of Relics, Cannonball Hard Revenge, Ogre Claw