Sources: https: //i.ytimg.com/vi/gKKYNj68aCM/maxresdefault.jpg; http: //www.carousel-music.com/images/intervals.gif
; http:/ /smartbassguitar.com/wp-content/uploads/2015/11/music-intervals-chart-bass-guitar-smart-bass-guitar.png
Sources: https: //i.ytimg.com/vi/gKKYNj68aCM/maxresdefault.jpg; http: //www.carousel-music.com/images/intervals.gif
; http:/ /smartbassguitar.com/wp-content/uploads/2015/11/music-intervals-chart-bass-guitar-smart-bass-guitar.png