I want to develop Learning Mgmt system for a Music Academy that can be accessed by students on their Mobile device. Students should be able to learn singing by Repeating after the teacher. FOr a given lesson[uploaded on cloud], when the student clicks on start button of the video player, I wanted following features: Playback video of teacher singing followed by student repetition section. • Play/Pause, Progress bar. No Seek functionality. • Show lyrics with real-time colour fill. Separate colour for teacher and separate for student. • Part indicator - Should display ‘Listen’ during teacher’s singing and ‘Sing’ during student’s part. • Countdown timer - 3,2,1, Go after teacher and before student part.
I am looking for a ready to use API which can be free or I am ready to purchase if it fits my budget.