Well I know 1 song about lesbians. But I'm not sure if it is the type of song u r looking for. It's a song by one of my fav bands called The Midnight Beast.But the song kinda makes fun of lesbians, not in a horrible way. Any-ways I like the song and think its good, so you can look it up if u want 2. It's Lez Be Friends by The Midnight Beast. Sorry this probally is not what ur looking for. :)
A few songs that come to mind are "Jesus" by Betty and "Lick It" by God-des and She, they are lesbian based groups. You can go on youtube and find these songs and more songs by these groups.