The drawing technique of using dots instead of lines called stippling. Using lines instead of dots on the other hand is called hatching. Stippling involves placing individual dots across a surface in a pattern that will be identifiable. Individual dots are used to imply the shape, texture, or shadowing of a subject.
Answer:
If you are on a woodwind instrument:
The notes at the top represent one instrument's part and the notes at the bottom represent another one of the same instrument's part. if the two instruments play in unison, there should be a nice harmonic sound.
For example, if you had two trumpets playing this piece, one would play the higher octave and the other would play the lower octave.
If you are on a Piano:
You can play these notes at the same time.
Count carefully and look at the time signature, key signature, rests, and articulation!
Good luck!
