The above is a group of notes with modifiers. The small notes in front are called "front graces" and occupy the duration of the big notes behind them, but the total duration of the big notes remains unchanged. The entire group of notes The time value is still the whole-note time value. If one beat is made of quarter notes, it is four beats.
The small black square under the big note is a dichotomous rest, connected to the following notes with downward stems.
In the second picture, the leftmost one is the treble clef, and what follows the clef is the key signature. This key signature is expressed as the key of F. There is a flat in the third line position, indicating that whenever B is encountered in the score, All the notes must be played as bB.
The upper right corner is a quarter rest, and the lower right corner is a whole quarter note.
These two scores are both multi-part staves, recording two parts in the same line, and playing them simultaneously according to their respective time values.