Bird changes
The Blues for Alice changes, Bird changes, Bird Blues, or New York Blues changes, is a chord progression, often named after Charlie Parker ("Bird"), which is a variation of the twelve-bar blues.
The progression uses a series of sequential ii–V or secondary ii–V progressions, and has been used in pieces such as Parker's "Blues for Alice". Toots Thielemans's "Bluesette", Freight Trane written by pianist Tommy Flanagan, and Parker's "Confirmation" also have similar progressions. Nikka Costa's 1983 song "First Love" also featured the progression on  its chorus.

Structure
A simple blues progression, in C, is as follows:

A typical blues progression in jazz, in C, is as follows:
The Bird Blues progression, in C, is as follows:
In roman numeral analysis, this is represented by

This can be viewed as a cycle of ii–V progressions leading to the IV chord (F7 in the key of C major), and the tritone substitution of the dominant chords leading by half-step to the V chord (G7 in C).


== Sources ==