on the tune

going out with someone you like but not yet in a relationship hence being 'on the tune'

Clara: Im on the tune with John
Steve: Awesome!

Tune

Tune, pronounced TUUUUUNNEE, means that a really well known, good song is being played.

A song comes on the radio.

'My days this is a TUNE, like'

tune

To flirt and attempt to get a girl to be attracted to you. Has no real derivation, but I sometimes think of it as tuning the girl to your station, not disimilar from a radio.
The act of 'tuning' ceases the moment you kiss the girl or a relationship is formed.
A 'tune mission' is going for a walk, mission or outing with the aim of meeting, tuning and hopefully scoring with hot chicks.

"I've been tuning Kate lately."
"Let's go for a tune mission."

to the tune of

1. Set to the musical composition of.

2. Used to mean "approximately", or "in the general range of", but usually only when talking about large sums of money.

1. When I heard Weird Al Yankovich's lyrics to the tune of "Beat It", I decided that maybe MTV really was a worthless tool of Satan.

2. Right: So then I had to pay something to the tune of $5,000 for a new one.

Wrong: So then I had to pay something to the tune of $0.05 for a new one.

Notice that the order of magnitude of the cash amount affects the usage of the phrase.

tuned

To get drunk or already getting drunk

Man i am getting tuned tonight!

tune

South African slang. To tell someone something, or to tell someone you're unhappy about something they're doing.

"Tune me details about that chick you scored last night"

or

"Hey Boet, that oke is skeefing your cherry"

"I check oke, I scheme I should tune him, one time!"

on the tune

To attempt to attract all woman within the proximity defined.
e.g. 100 milles.

Red: "Text me, I'm at a rave....I'm on the tune!!!"