A sus 4 (add 9) (with A bass)

This one was rediscovered when working out 'Minuano (six eight)' from Pat Metheny's 'Still life (talking)' — a man heavily into parenthesis. In 'Minuano', the chord occurs after a progression of Dmin7 and Emin7 and resolves to A (add 9) by lowering the D to a C#. Note: I call the chord an added ninth rather than A9 because the latter symbol would imply the presence of the seventh (G). Playing this month's chord stirred the grey matter and reminded me of the intro to Shakatak's 'Feels Like the Right Time' in which the chord alternates with a flattened ninth (sus 4) formed by dropping the B to a B flat.