A(19) - Mario
B(10) - Donkey Kong
C(18) - Legend of Zelda
D(10) - Metroid
E(06) - Yoshi
F(12) - Kirby
G(10) - Star Fox
H(10) - Pokémon
I(10) - F-Zero
J(11) - Fire Emblem
K(06) - Mother
L(08) - Pikmin
M(17) - Wario Ware
N(11) - Animal Crossing
P(04) - Kid Icarus [Yep, no letter O]
Q(13) - NES [No clue.. but it mostly consists of old NES themes or the X-Maintheme for example]
R(16) - WiiDS [No clue as well.. but it has some Wii and DS-Themes x]
S(09) - Metal Gear
T(04) - Original Arrangements #1 [Has got some Melee arrangements too]
U(12) - Sonic [Yes.. Sonic has 12 BGMs! Original Green Hill inclusive! ]
W(30) - Smash Bros. Melee [Huge amount of Melee stages returning]
X(27) - Original Arrangements #1 [Mostly remixes of the Brawl theme ]
Y(15) - The Subspace Emissary
Z(27) - Victory Themes & SFX
