Locrian Mode

The video tutorial explores the Locrian mode, a unique musical mode with a diminished chord and a tritone above its final. It is one of the least used modes in music history. The tutorial demonstrates how to build the Locrian mode using the C major scale, highlighting its intervals and similarities with the Phrygian and Lydian modes. Despite its rarity, the Locrian mode gained some attention in the 20th century with composers like Rachmaninoff, Hindemith, and Sibelius. The video concludes by noting the mode's almost forgotten status, akin to Pluto.

Which composers began to use the Locrian mode in the 20th century?

Why is the Locrian mode considered one of the least used modes?