"Vuela" is Jarabe de Palo's song about being surrounded by noise and still feeling completely alone. The singer opens by admitting it has been a long time since he heard the waves breaking on the rocks, "Mucho tiempo llevo sin oír las olas" (I haven't heard the waves in a long time). Everyone around him shouts, but nobody listens.
His answer is the chorus: "Por eso ahora querría ser un pájaro" (That's why now I'd like to be a bird), flying up "muy, muy alto" (very, very high). In between he asks someone to sit down, have a drink and talk without hurrying, because maybe they know something he doesn't. He even decides it's "mejor ser lobo solitario" (better to be a lone wolf) than to walk next to someone and "mirarte y no ver nada" (look at you and see nothing).
The ending is blunt and fun. "Mueve el culo y márchate" is a cheeky way of saying "get your butt moving and leave", and "lárgate" is a casual "get out of here". Watch the verb vuela too: it is the command "fly!", so the title is telling you to drop everything and go far away.