Hello! I have noticed (while singing in the bathroom) that some musical tones sound louder than others. Example: (if we play a musical tone-note C (261,63 Hz) and then with the same intensity A (440Hz), the sound that comes out does not have the same intensity.) I was searching for an answer, but unfortunately I didn't find it yet and that is why I am asking you if anyone knows what is the reason for it and whether it is related to aliquot tones and resonance? I apologize if the question is too easy, but I'm not in that field of study (I'm studying jazz- singing and composing ) Thank you and have a good day! Anja