What does 528hz sound like?

Answer 1

This is a good example of an actual 528 Hz tone: See related link to youtube for the example

528Hz is a C (actually closer to a C#) in the western musical scale. Instrumental tuning imposed mid-century is set at the note A being 440Hz. If a musician tunes their instrument using the 528 Hz frequency, the A note should be 444 Hz. You can try this at home. There are many tuners and explanations online. Lovetunar is a good portable tool to start with: See related link below(a 528Hz tuner for mobile phone).

Tuning Forks are also now widely available, and said to be very accurate. Resonating this forks is also oddly very fulfilling.