There are many ear training pitch methods out there. Some suggest apply trail-and-error methods to train aural skill. Keep on repeat on action of listen to same melody and try to figure out which key those notes fall into. However, most people give up at the end as there is no much improvement after long time they practice it.
To develop absolute pitch effectively, a lot of musicians nowadays prefer to learn this musical skill by using ear training pitch software. Greg Mathers, a guitarist from United Kingdom, having improvements accumulating day-by-day after using the ear training software called Pitch Master Pro. The methods used throughout the software are so simple and effective. Some people even took one session to see instant results.
With the ability to identify the letter-name of a sounded note, those people are able to identify the key of a given piece of music and translate their ideas into music. This is the skill that allowed musical legends like Mozart, a famous classical composer, to steamroll his way to the top.
Today, having absolute pitch is no longer mystical in music world. There are many musicians notice this fact. They are learning to recognize pitches just like learning language with help of the ear training pitch software.