I sing and play on my Anglo using chords and Melody. I have noticed that some players use a combination of notes to make a chord so that with a reverse of the bellows gives them the next chord required . The easy ones I know using 3 notes on my 34 button C/G are L/H are FM to Em ,CM to Dm , GM push to Am, Do you know any more using just 3 notes ? I guess there will be many using 2 notes with reversing the bellows but I have not researched them yet . Another 10 years of practice required ! Bob