The idea of Proximity was used to achieve unity in this poster with the text being group with the sheet music. The idea of balance by value is added in this poster because the text stands out but the sheet music can also be read. Rhythm was achieved by using repetitive rhythm with the text being in-between each line of music. Orange was picked because it stands out but doesn't take away from the background of the sheet music. 

The idea of continuation was used to achieve unity in this poster with the instrument leading upward towards the text. The idea of symmetrical balance is added in this poster because the is equal on both top and bottom. Rhythm was achieved by using shape and position violin being bigger and sticking out. White text was used so it wold take away from the violin in the middle of picture.