Overtone Series:
| Frequency | Example | Overtone | Interval |
| 1x | A - 110 | 1 | Unison |
| 2X | A - 220 | 2 | Octave |
| 3X | E - 330 | 3 | Perfect Fifth |
| 4X | A-440 | 4 | Octave |
| 5X | C#-550 | 5 | Major Third |
| 6X | E - 660 Notice it is twice E-330 | 6 | Perfect Fifth |
| 7X | G - 770 | 7 | Minor Seventh |
| 8X | A - 880 | 8 | Octave |
| 9X | B - 990 | 9 | Major Second |
| 10X | C# - 1100 | 10 | Major Third |
| 11X | D - 1210 | 11 | Perfect Fourth |
| 12X | E - 1320 | 12 | Perfect Fifth |
| 13X | F/F# - 1430 | 13 | minor/major sixth |
| 14X | G - 1540 | 14 | Minor Seventh |
| 15X | G# - 1650 | 15 | Major Seventh |
| 16X | A -1760 | 16 | Octave |
