<p>How do you know if you have perfect pitch for sure? Is there some test you can do?</p>
<p>I can tune a guitar or violin for example without a tuner. (Consequently, I can also replicate any note since I have memorized the pitch for "A" from my days in orchestra.)
Is this perfect pitch?</p>
<p>Textbook: Tonal Harmony.</p>
<p>generally if you can sing any note on command and recognize any note/chord on command, you can say you have perfect pitch</p>
<p>if you have perfect pitch you shouldn't need a reference point</p>
<p>It actually is possible to develop perfect pitch, but you have to work really hard and have a good teacher. Relative pitch is easy to acquire though, but of course everything is easier the younger you are...</p>