Hi,

I am having a great time on this site and just moved on from fundamentals onto rock lessons.

Had a quick question, I understand the Key chord identification structure of 1st, 4th & 5th, simple enough, and also understand that although usually the first note/chord played is the key a tune is in it doesnt always work that way. I know you can play a song in a key and but start with a note/chord that is not in that key.

But what if you create a tune that doesnt follow the 1, 4, 5 structure? I came up with a part of a tune (only very short) of Amaj>Amaj flat>C#minor (barre chords)>A (rock open)>C(open)>B7>Emaj. How do I figure out what key it is in as there is nothing in there that fits into the 1,4,5 format but still sounds okay that the chord progression works ?

Sorry its a bit of a fiddly question.lol.