If you've always had a special vendetta against Seiken Densetsu 3/Trials of Mana's distinctive drum sounds, then here is a hack that does absolutely nothing but replace a few of them. The snare has been completely replaced with an edited version of the "Ouch Snare" sample from the Roland R-8, the source of the snare used in Secret of Mana. The kick has been replaced with FL Studio's "Grv Kick 28", with some of the original kick mixed in since the same sample is used for different (non-kick) purposes in some songs. Similarly, the snare's reverb sample in "Left-Handed Wolf" has been changed to match the new snare sample, but some of the original sample is still mixed in since the same sample is used for different purposes in other songs. Finally, the tambourine sample has been treble boosted slightly to better compliment the snare. 

Unfortunately these changes are slightly detrimental to some songs, with "The Sacrifice, Part Two" probably sounding most noticeably worse. The readme contains a full list of songs that are improved or worsened by these changes.

This patch has not been tested with any other hacks, so stack at your own risk, but since this all this hack does is replace a little bit of sample data, it should hypothetically work with most hacks when applied first.

ROM information for Trials of Mana patch:
Database match: Trials of Mana (World) (Collection of Mana)
Database: No-Intro: Super Nintendo Entertainment System (v. 20210222-050638)
File/ROM SHA-1: 462580125693A73DA90DA08D415023A885D84D1D
File/ROM CRC32: 9743DC0E

ROM information for Seiken Densetsu 3 patch:
Database match: Seiken Densetsu 3 (Japan)
Database: No-Intro: Super Nintendo Entertainment System (v. 20210222-050638)
File/ROM SHA-1: 209C55FD2A8D7963905E3048B7D40094D6BEA965
File/ROM CRC32: 863ED0B8


Songs that sound better:
Raven (ymmv)
Left-Handed Wolf
Few Paths Forbidden
Different Road
Nuclear Fusion
Splash Hop
Obsession
Strange Medicine
Frenzy
Can You Fly, Sister?
Secret of Mana
Faith Total Machine
Black Soup (ymmv)
Hightension Wire
The Sacrifice, Part Three

Songs that sound worse:
Three of Darkside (uses snare reverb to supplement explosion)
Rolling Cradle (uses low pitched kick as clave-like sound)
The Sacrifice, Part Two (uses low pitched kick as claves, as ambience, as pitch modulator; uses snare reverb as ambience and semi-melodically)
Weird Counterpoint (same as Rolling Cradle)

Songs that sound different, and arguably worse (for most of these, only the tambourine sample is relevant)
Ordinary People
Little Sweet Cafe
Swivel
Oh I'm a Flamelet
Last Audience
Flight From the Holy Land

Some sound effects are also slightly altered ("Cannon Fire!", for example)