if you play chords I-IV-V in different keys going round the circle of 4ths, you get to hear the same pattern of chords, and you soon recognise what a I-IV-V sounds like in any key.

The same thing goes for the II-V-I chord progression in any scale.

It’s similar to recognising an octave note higher up, like if you listen to Somewhere over the Rainbow – Some(C)Where(Octave up C)

145 progressions found in blues music
251 most common progression found in jazz music

And 2 5 1
See the green circle on the tonal map to follow along with ok

I’m currently working my way through the IFR Courses – they are long term, talking years to work my way through. I’ve founds parts of it useful, it’s a case of trial and error, i tend to pick out the parts i find useful and incorporate them in my daily routine.

I’m just a novice, but if anyone comes up with any useful stuff or corrects me if i’ve got things wrong – by all means share the information, everyone has a lot to gain by discussion.

i’m currently memorising all 12 “minor 7 flat 5 (half diminished) arpeggios. The only reason i’m memorising all the types of chords (or arpeggios) – major, dominant 7, minor 7, half diminished, diminished, augmented is because i got fed up of looking through music sheets and fumbling trying to work out what chords are on the sax.