4The hummingbird sex position involves a man performing oral sex on a woman with the added benefit of humming at tune for super vibratory stimulation. Be careful though, because humming the wrong tune will distract your partner. So here are some suggestions for tunes you can hum during oral sex:
* Let’s Get it On
* Here comes the bride (for wedding night use only!)
* Whip appeal
* My Cherie Amor 
* Soon as I get home from
* Anniversary song
* Sexy MotherFucker
* Always and Forever
* Purple Rain
* Freddie’s Dead (Curtis Mayfield for all of you who have no idea what I’m talking about)
Almost Anything By Teddy Pendergrass
* Love TKO
* Come go with me
* Turn off the lights
* Close the door

And if you are too white to handle all of my R&B suggestions:
* Sarah’s Smile by Hall & Oates

And if your are really so white that you can only think about Country Music:
* Love Me Tender by Elvis Presley

And of course, here is a much larger list of some bad songs to hum during oral sex:
* Beethoven’s Fifth (dum-dum-dum-dummmmm)
* Happy birthday to you.
* Cheeseburger in paradise
* Baby Got Back
* Like A Virgin
* Achey Breaky Heart

Also, if you are a woman performing oral on another woman:
* Come to my window by Melissa Etheridge

One note, if you sing during this exercise it is called the gondolier because you are singing while you stimulate the man in the boat.


source : http://www.sexualpositionsfree.com/usedofbedfor.html