Every beginner who plays Alto Sax, has problems recording the sound of musical notes in his head, to be able to play by ear to improve tuning and improvisation, and whenever he goes looking for some exercises to train his perception, he only finds it on guitar or piano, which are instruments tuned and C, and the Alto Sax is tuned in Eb, not to mention the timbre that is quite different, thinking about it we developed this application, where part of it has a virtual alto sax, where you can hear the sound of each note of the Alto Sax , with the tone of a real sax, we use a real alto sax to record the notes, in the other part we have a challenge where you will play the note and you must mark the right note, thus accumulating points for hits and at the end you will give your result.

Study recommendations, in the Sound section we recommend at least 10 minutes daily, where you will put the headset and listen note by note, paying attention if it is a dark or open note observing the timbre if you can try to sing the note and observe where it is stays in the pentagram.
After 1 month start the part of the challenge paying attention to the note that will play because it only plays once, try to sing it and preferably have your instrument next to it and try to find the answer in it and mark it, if you don't have the instrument next to you go in the sound tab and play the notes until you find the right one, when you manage to hit all the notes, start the challenge again but now with no instrument, only your ear, when you manage to hit all the notes, Congratulations you have absolute ear for the Alto Sax.