The bass drum pedal strike, represented by a filled-in circle at the bottom of the staff, is a rhythmic component in musical compositions.
The floor tom, a deep, booming drum, is represented by a note on the fourth staff space, often denoted by "FT" or "F Tom".
Tom drums, "T1" and "T2," are represented by open circles above the staff, with the second space having a higher pitch than the first.
The 'X' symbol on the staff or ledger lines represents hitting the snare drum, which produces a sharp, staccato sound.
The hi-hat pedal symbol, which resembles an 'x' or '+', instructs the drummer to press the pedal to adjust the sound's openness and closure.
The 'X' symbol on the staff represents striking the crash cymbal, which produces a powerful, explosive sound.