I feel like I should know this beyond a shadow of a doubt but ...
If a song requiring an instrument has ....
Haste, does the instrument modify the haste? Ie the v2 50/60 song haste is brass modified. Is this a flat 5/10% respectively or will popping a horn modify it? For this song:
http://wiki.project1999.com/McVaxius%27_Rousing_Rondo ... will equipping brass modify the haste percentage, or just the str/attack/DS component?
If a song requiring an instrument has ...
A slow component, does the instrument modify the slow percentage? For example ... the level 60 slow/dot that lasts a full minute has 31% slow and a dot component. If I equip a horn, I know the dot part will be amplified, but what about the slow? Having a 60% slow that lasts a full minute ... likewise would be nice.
I know that for snare songs with an instrument potential, the instrument does modify the snare component, just not sure on the slow.