For Infantry, Grenadier and Jδger regiments in 1812:
"regimental band"
-- 2x фагот fagot bassoon
-- 2x валторн valtorn like a big French horn
-- 2x кларнет klarnet a bit bigger then a modern clarinet
-- 2x флейт fleyt fife or flute
-- 1x барабан baraban drum
-- These horns were all brass, the musicians all under-officers
-- Additionally, for each Saint-George award, add 2 silver trumpets
-- From 1809, in the Life-Guard Preobrazhenckiy regiment had 40 musicians and the other guard regiments 25 with a broader range of instruments
-- By 1812, several of the guard regiments also had a drum-major or "chef de musique", above complement and at the expense of the officers
-- The regimental band formed with the 1st battalion, but the musicians were usually told off for tending the wounded during combat
"tactical musicians"
-- 1x полковой барабанщик polkovoy barabanshchik regimental drummer (under-officer), formed with the 1st batallion
-- 2x батальонный барабанщик batal'onnyy barabanshchik battalion drummer (under-officer), formed with the 3rd batallion and with the "center" companies of the 2nd battalion
-- 6x ротный флейтщик rotnyy fleytshchik company fifer/flutist, 2 formed with each of the 1st and 3rd battalions, and 2 with the combined grenadier battlaion that included the grenadier company of the 2nd battalion
-- 36x ротный барабанщик rotnyy barabanshchik company drummer 12 formed with each of the 1st and 3rd battalions, 3 with the combined grenadier battlaion that included the grenadier company of the 2nd battalion, 9 with the "center" companies of the 2nd battalion
-- The "tactical musicians" for a battalion were formed as a "battery" to the right of the line when in deployed, or inside a square, or at the head of a column
-- In the Life-Grenadier regiment, there were a total of 24 fifers/flutists 2 for every company
The Jδger regiments were "supposed" to have adopted this standard organization in 1811. However, previously (since 1802) they had had a rather different establishment:
"regimental band"
-- 1x мастер-валторнист master valtornist (under-officer), with the 1st battalion
-- 5x валторнист valtornist, 1 with the 1st battalion, 2 each with the 2nd and 3rd battalions
-- Additionally, for each Saint-George award, add 2 silver trumpets, with the 1st battalion
"tactical musicians"
-- 1x полковой барабанщик polkovoy barabanshchik regimental drummer (under-officer), formed with the 1st batallion
-- 2x батальонный барабанщик batal'onnyy barabanshchik battalion drummer (under-officer), formed with the 2nd & 3rd batallions
-- 24x ротный барабанщик rotnyy barabanshchik company drummer 8 formed with each battalion
-- It is not perfectly clear (to me, at least) which jδger regiments had accomplished the expansion to standard organization by 1812, nor is it clear to what extent (if any) the horns were then being typically used for tactical signalling.