Some Greek songs come to my mind immediately: Gierakina, Samiotissa, and Old Charalambis, but there are a lot more in Greek folklore.

This old dancing metre is composed of a Trochaeus and a Spondaeus, two classical metres: Long-short and long-long. You don't count 7 eighths, but in a 4-paces metre: pace (1-2)- short hop (3)- pace (4-5)-pace. A very lively metre for dancing.

The fast 7/8 metre is called Kalamatianos, two examples here.
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