Top mods / Reactive Music
Not listed
Reactive Music doesn't list Minecraft 26.3 on Modrinth. The newest release it lists is 1.21.11, on Fabric.
Open Reactive Music on Modrinth
Also lists 17 snapshot or pre-release versions, not counted here.
This is what the mod's author listed on Modrinth, not a test. A listing doesn't prove a mod runs on your setup, and a missing listing doesn't prove it fails. Versions must match exactly, and files published elsewhere, such as CurseForge, aren't counted.