G Major is..
One sharp (F#)
F Major is..
One flat (bb)
C Major is..
No sharps or flats
A Minor is..
G Sharps (G#)
Melody/Harmony
-Major/Minor
-Cadence
-Countermelody
-Modulation (change of key)
-Pedal
-Scales (Harmonic, Melodic, Whole Tone)
Rhythm
-Time Signature
-Tempo
-Ornaments (Trill, Mordent, Acciaccatura, Arpeggio)
-Change in tempo/volume
-Anacrusis
-Syncopation
Timbre
-Instruments
-Voices
-Ways instruments are played