In music, a half note or minim is a note played for half the duration of a whole note and twice the duration of a quarter note. It was given its Latin name because it was the shortest of the five note values used in early medieval music notation.
How many beats are in a half note?
In 4/4 time a whole note gets FOUR beats; a half note gets TWO beats, and a quarter note gets ONE beat. Based on what you saw above, that 4/4 time signatures mean four beats to the measure and the quarter note gets the beat, 18.
What is a 1/2 note called?
In music, a half note (American) or minim (British) is a note played for half the duration of a whole note (or semibreve) and twice the duration of a quarter note (or crotchet).