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To fathom how 3D TV technology works, one must find out how our eyes work. Our eyes are several centimeters apart from each other and therefore receive the input image from different positions. Our brain uses that information and is smart enough to mesh the two different images into one single view, creating depth, and making what we see 3 dimensional or 3D.3D TV sets work in somewhat theewhat the way, one way or another they transmit two separate images to your eyes in a very precise way that it knows your brain will alter the incoming image into 3D after processing it.Tricking the brain in this way is no easy assignment, and for for some time now the simple and cheap technology was to use colored glasses that had a large drawback of limiting the number of colors that you could enjoy a movie in.Today, bigger TV manufactures such as Sony have improved on the process that with shutter glasses the full spectrum of colors can be enjoyed. Panasonic is one of the manufactures that has now developed an auto stereoscope system that will make it possibleke it possible make 3D viewing possible without the need of uncomfortable glasses at all.All in all, the 3D TV industry is still in its initial stages, but many leading companies are investing strongly into it in hopes that it will be the next big fad. If movies such as Avatar are anything to go by, the chances of success are pretty superior. Now it is up to the industry to improve technology and make it less of a burden, reduce prices, and generate enough content through 3D games, 3D movies, 3D episodes of popular series, and 3D TV channels.

YouTube has ended a block on online music videos after agreeing a royalties deal with songwriters’ association PRS for Music to end a six-month dispute.

The video-sharing website made thousands of official music videos unavailable to UK users in March after its parent Google failed to reach an agreement over fees.

But YouTube announced it has agreed to pay an undisclosed lump sum to PRS, in a deal which will last until 2012.

The deal is understood to be worth millions of pounds and is backdated to January 2009 when YouTube’s previous licence expired.

YouTube is expected to take around a week to reinstate the thousands of deleted music videos back on the site.

Andrew Shaw, PRS’ managing director of broadcast and online, said: “It is important that those who are creating music – the writers and composers we represent – be rewarded when their works are used.

“YouTube is a popular online video destination, and this new licence continues to support musical talent.

“This is an achievement for songwriters, composers and the YouTube community alike and it reinforces the value of our members’ work.”

Earlier he told BBC Breakfast 90% of the members earned less than £5,000 a year, adding: “For them all the money they receive from us is really their living.

Maybe you play mostly chords on you ukulele? Do you know that you can play melodies with the help of ukulele tab? Let’s play Tom Dooley!

Here you have the lyrics to the first verse:

Hang down your head, Tom Dooley
Hang down your head and cry
Hang down your head, Tom Dooley
Poor boy you’re bound to die

You don’t have to know sheet music notation to play. Instead we will use a form of tablature.

Tablature is a special form of musical notation that will show you how to place your fingers in order to play a melody on your ukulele. This notation is also called ukulele tab.

On your ukulele you have four strings. The one with the highest pitch is called the first string and is usually tuned to an A.

When you play on your ukulele you will have the first strings nearest your feet.

Before you start to play Tom Dooley let’s take a look at the ukulele tab notation. What does the following tab mean?

01

In this type of ukulele tab this means that you play the first open string. An open string is a string you play without pressing down a left hand finger. One more example:

32

The numbers indicate that you shall press down the third fret on the second string.

Now it’s time to play the first part of Tom Dooley. Here is the lyrics and corresponding ukulele tab:

Hang down your head, Tom Dooley

03 03 03 23 12 01 01

Remember, the first digit tells you which fret to press down and the second which string. Here comes the next ukulele tab:

Hang down your head and cry

03 03 03 23 12 32

This type of ukulele tab doesn’t tell you the length of the notes but you will probably find that out by yourself as you already know the melody.

Let’s move on!

Hang down your head, Tom Dooley

03 03 03 23 12 32 32

You can use your right hand thumb to play the notes. What about your left hand?

Of course you can play all notes with your left hand index finger. However in the long run you will probably find it easier to play melodies with more of your left hand fingers.

I suggest that you use your left hand index finger to press down the notes on the first fret, your middle finger for the second fret and your ring finger for the notes on the third fret.

Let’s continue with the last ukulele tab:

Poor boy you’re bound to die

32 32 01 12 23 12

This ukulele tab will also work on a guitar as the first three strings are tuned in the same way on a guitar.

Try to memorize the melody by practicing the ukulele tab one line at a time!

Well, now you can play Tom Dooley on your ukulele so now it’s time to play for your friends!

If you have a friend who owns another ukulele and can play chords you can play the melody together with the following two chords:

F major: 24 03 12 01

C7: 04 03 02 11

Start with F until you come to the word cry. When you sing cry change to the chord C7 and play it until you come to the word die where you change back to F again.

It is always nicer to play with friends, isn’t it!

Peter Edvinsson is a musician, composer and music teacher. Visit his site Capotasto Music and download your free sheet music and ukulele tab at http://www.capotastomusic.com.