I just saw my friend play the piano and I requested a song that she didnt tried playing in the piano in her life. After hearing the sample, she played it good and she said she just played it by hearing the song..
I can’t ask help from her since she’s not that good of a tutor.
I tried hearing a very familiar song and tried playing it.. But of course, it was difficult..
So what is the best practice so I can play piano songs by ear?
I think the best practice depends on the type of music you are referring to. I am going to guess you heard a particular pop song. If so, the chord structure of pop songs is mostly based on classical music structures. I’ve played piano my whole life and each song I play I study the chord progressions. Then when I hear a song some of the main chord progressions I will recognize: The easiest progression being I, IV, V. (the one chord, the four chord and the five chord). Start by identifying the key – the chord the song keeps coming back to. I’m simplifying this a lot for the sake of this quick description but the idea is there for you to consider. Later you will learn to recognize the other chords (basically there are usually 7 main chords build on the 7 notes of the major or minor scale the tune is in – moving from one to the other and then often back to the one chord – the root or tonic chord. All these progressions make up the basic structure of the harmony on top of which is a melody). You can learn this by learning to play the piano and thinking about the chord structures of the songs you are learning. Then when you hear a song you can be sure you will recognize the patterns you studied. I hope this has been of some help. Its a start. I am sure I am missing many other angles to this. Good luck and I know you can do this if you listen and give it some time more or less. Patience helps too! Studying music theory is the best solution to this. Shouldn’t take more than 3 years of studying music theory to get a grasp of this.
I included a good music theory website. There’s lots there but start a little at a time.