rock combo -- what does that mean?

Question

The background-attachment property is little used, but very effective. On the web site for top rock combo Dirty Pretty Things (www.dirtyprettythingsband.com), a fixed background image was declared in the body selector, ensuring the background image stayed stationary while the main container and everything inside it scrolled as would be expected (see Figure 5-19).

I suppose the word top in that phrase means something like the best but what exactly does rock combo mean?

Answer 1

Colloquial term for a rock band/group, I would imagine.