[Advaita-l] bruhat sAma

[bhaskar.yr at in.abb.com]

praNAms
Hare Krishna

I have small doubt & need clarification...in gIta lord first say vEdAnAm
sAma
vEdOsmi ( in vEda-s I am sAma vEda) & subsequently he says bruhatsAmaM
tathA sAmnAM (in sAma vEda I am bruhatsAma)..I am not able to understand
why
first lord said I am sAma vEda & then declares that  he is only part of
that
vEda i.e. bruhatsAma??  what exactly is this bruhatsAma??  can any sAma
vEda
scholars clarify this??

Hari Hari Hari Bol!!!
bhaskar