Both online music classes and offline music classes have their own utility, but if compared, I would like to give 10% extra marks to offline music classes, because the attachment and atmosphere that offline classes have is not there in online classes, there are some musical instruments which will be very difficult for you in online group classes, such as flute class, sitar, violin, etc., but if you learn individually (one to one) then it is possible that you can learn quickly,
But one plus point of online music classes is that if you are far away or you do not get time, then you can easily learn through online, because here you save a lot of time, and the second plus point is that due to the advent of online music classes, you can easily meet good teachers.