A milonga is a social event or location for tango dancing. More simply, milongas are tango dance parties. People who dance at milongas are known as milongueros. When a group of people go tango dancing, they go to a milonga. People come as individuals or with a partner. Music is usually played in tandas, or sets, with 3 or 4 songs in a tanda. In betwen tandas there will be a cortina, a short music interlude (30 sec or so long) of non-tango music. This is the customary time to change partners or take a break if you want to. Most milongas are held on a regular basis (usually weekly).