Key signature A minor as each accidental may be notated explicitly as required, or the piece may be modal or atonal. An example is Bartók's Piano Sonata, which has no fixed key and is highly chromatic. If not bound by common practice conventions, microtones can also be notated in a key signature; which microtonal symbols are used depends on the system. The common practice period conventions are so firmly established that some musical notation programs have been unable to show nonstandard key signatures until recently. The use of a one-flat signature developed in the Medieval period, but signatures with more than one
Not a Second Time Lied von der Erde." Lennon, years later, remarked: "To this day, I have no idea what [Aeolian cadences] are. They sound like exotic birds." The actual meaning of the term "Aeolian cadence" is when a major key song resolves on the vi chord, which is the tonic chord of the relative minor key. The term derives from the fact that the Aeolian mode is rooted on the sixth step of the major scale. Dominic Pedler considers the "Aeolian cadence" moment to occur at the end of this line: (Am) "You hurt me then. You're back again. No/(Bm) no no/(D7) not