1. Understand the key and time signature.
This is Halloween is written in the key of C major and has a time signature of 4/4.
2. Learn the melody.
The melody of "This is Halloween" is relatively simple and can be played with just the right hand. The notes for the melody are: C, D, E, F, G, A, B, C.
3. Add chords.
The chords for "This is Halloween" are C, G, Am, and F. You can play these chords with the left hand.
4. Practice.
To improve your performance, practice playing "This is Halloween" slowly and gradually increase the tempo.
Here are the specific notes and fingering for the right and left hands:
Right Hand
C - C4 (thumb)
D - D4 (index finger)
E - E4 (middle finger)
F - F4 (ring finger)
G - G4 (pinky finger)
A - A4 (thumb)
B - B4 (index finger)
C - C5 (middle finger)
Left Hand
C - C3 (thumb)
G - G2 (index finger)
Am - A3 (middle finger), C3 (ring finger), E4 (pinky finger)
F - F2 (thumb)