Volume is one thing but quality should be also important for music videos, and even HD VEVO videos has noticeable worse quality than a 256kbps MP3. Probably due

Volume is one thing but quality should be also important for music videos, and even HD VEVO videos has noticeable worse quality than a 256kbps MP3. Probably due to the re-encoding, and the lower quality settings at YouTube. So YouTube is still not good for music listening if you are sensitive to the quality.