Half Note: (H)
The note immediately adjacent to the reference note is called as a Half Note. They are also called as Semi Tones.
Half Note Examples


Every reference note has two half notes (semitones).
- One half note is UPwards (right hand side)
- Another half note is DOWNwards (left hand side)
Whole Note: (W)
Two half notes make one whole note.
Whole Note Examples


Every reference note has two whole notes (full tones) too.
- One whole note is 2 half notes UPwards (right hand side)
- Another whole note is 2 half notes DOWNwards (left hand side)
Sharp: (#)
A sharp can be defined as 1 half note UP.
OR
1 semi tone towards the right hand side of the reference note.
Sharp Notes

So, the 5 black keys now have their sharp names.
Special Sharps

Yes, E# and B# exist.
- Since F is 1 half note UP of E, F is also called E#
- Since C is 1 half note UP of B, C is also called B#
Flat: (b)
A flat can be defined as 1 half note DOWN.
OR
1 semi tone towards the left hand side of the reference note.
Flat Notes

So, the 5 black keys now have their flat names too.
Special Flats
