The Eighth Note looks like a quarter note with an added flag. The Eighth Note receives a value of 1/2 or 0.5 of a beat. Beamed Eighth Notes receive a value of 1 beat.
What is a beamed eighth note?
In musical notation, a beam is a horizontal or diagonal line used to connect multiple consecutive notes (and occasionally rests) to indicate rhythmic grouping. Only eighth notes (quavers) or shorter can be beamed. The number of beams is equal to the number of flags that would be present on an unbeamed note.
How many beats does a beam note have?
Notes on the first beat can be beamed with the second beat, notes on the second beat beamed with notes on the third beat, and notes on all three beats can be beamed.