Here's a hack that replaces music, with a new - from well-known Genesis/Mega Drive game - Streets of Rage 2 (composer Yuzo Koshiro).
Hack uses old engine for sounds, and new for music, so all original sounds are saved. Gameplay untouched, only increased bonus timer to match longer music. Also bonus music different for each level.
Music cover created by icesoldier (written in FamiTracker).
Note: does not work with FCEUX v2.2.3, but works with v2.2.0.
Works with most other emulators and on EverdriveN8.
Database match: not found
Target ROM file name: Darkwing Duck (U) [o1].nes
Database: No-Intro: Nintendo Entertainment System (v. 20180803-121122)
File SHA-1: 38F998A8674F62090C6B905932A483CF804C146D
File CRC32: 5F309811
ROM SHA-1: BD9A02C64DB5C7BE25B66D7F35D7C18801DFFAE7
ROM CRC32: 333C05DB