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
I'm Not a Girl, Not Yet a Woman my album. Thanks for your input." "I'm Not a Girl, Not Yet a Woman" is a pop power ballad, founded on a strong piano melody, that lasts for three minutes and 49 seconds. The song is composed in the key of E♭ major and is set in time signature of common time, with a moderately slow tempo of 76 beats per minute. The song's lyrics talk about the angst and heartache that teenage girls suffer with puberty, where Spears claims, "I used to think I had the answers to everything." "I'm Not a Girl, Not Yet a Woman" has a