Atlanta, Georgia. Used by ghetto retards that are trying to abbreviate Atlanta but are too dumb, drunk, high, or a combination of the three to realize that ATL and Atlanta have the same amount of syllables.
Yo, I is livun in da ATL fo sho.
Translation: I'm a dumbass.
LP - Long Play, a normal album.
EP - Extended Play, a short album that usually has about 3 - 6 songs.
SP - Single Play, a CD, tape, record, etc. that has only one song, (a single) on it. In some rare cases, it can have 2 or even 3 songs on an SP.
I got that CD, (insert title) by (insert band name) yesterday. It's just an SP.