I am very new to music theory. From the website http://www.myvocalrange.com, it states that the vocal range for the song is from is Eb4-Ab5. But when I used the app on my android phone to measure the pitch while playing the song on YouTube to the speakers, it seems like the highest pitch is only Ab4, not Ab5... What am I missing here? Thanks in advance for the help.


Your website is wrong. This is exactly why I try never to rely on such applications; they tend to be wildly inaccurate. Of course, you could perform the song in the range suggested by the website, which might be easier if you're a female with a high voice, or a male with an extremely high voice as compared to averages. I won't tell you what the real range is, but in the future, my advice is to always verify any information about a song you receive online with something more reliable, preferably yourself, since technology for that kind of thing is known for being off by octaves and the like. If you want someone to tell you the range, ask elsewhere; such requests are off-topic on this site.

As a reality check when determining octaves, you should ask yourself whether it makes sense for Ed Sheeran to be singing an A♭5 in chest voice. That would be absurd, and certainly outside of his capabilities. A♭4 is much more reasonable, but that doesn't mean your app is correct, it just means it's likely the website's wrong. If it were a female singing the song, you could ask yourself whether it makes sense for her to be singing an E♭3. That's pretty low, but some women can do it, so it's less clear. E♭4 as the low note would be okay too. Also, the timbre of the note should help you determine the octave. With practice, it's easy to tell that a male singer is singing C5 versus C4 as long as they're in the same register both times.

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    There is some confusion about whether MIDI note 60 is C4 or C3 among people manufacturing and using synthesizers and music software, because Yamaha started out with a different standard than other manufacturers. This often leads to off-by-an-octave problems. See music.stackexchange.com/questions/70519/… – Your Uncle Bob May 28 '19 at 1:39
  • @YourUncleBob I was not aware of that, thank you. I guess then only the human ear is sacred :p – user45266 May 28 '19 at 4:19
  • Annoyingly, the problem has propagated into products by other brands. I once created a large sample set and then found out that the audio editor I used and the sampler it was intended for had a different idea of what C4 was. – Your Uncle Bob May 28 '19 at 4:32
  • @YourUncleBob Almost like when they destroyed a satellite because someone put the wrong unit system in one part of the code... I sure am glad I can just determine the octaves by ear, because I always got screwed over when I tried using any technology. I have a keyboard that shows every note in concert pitch except for some instruments, so I'll switch from piano to, say, cello, and suddenly I'm playing an octave down. It's awful... – user45266 May 28 '19 at 4:43

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