“Tango Polskie” was inspired by the composer’s interaction with Polish musicians and culture — with echoes of Argentinian tango. The haunting minor-key melody is supported by a chord progression that touches on Im, IVm, Vm, V7, and II7. It demonstrates the difference between the modal Vm and the functional V7 — and can serve as an introduction to the Secondary Dominant concept (II7 = V/V). The simple structure makes for a very accessible tune, while providing lots of space for the drummer to set the vibe and the groove.