The core of a polyphonic, phrygian drone piece. In the penultimate measure you add your own sections and form. Of course, this is not traditional or even medieval, but a modern pop/rock piece in „bagpipe clothing“.
%%printTempo false X:1 M:4/4 L:1/16 Q:1/4=115 K:Bphr V:1 name="1" snm="1" V:2 name="2" snm="2" V:3 name="3" snm="3" [V:1] Bc ^fecd | B8 c4 g4 | ^f14 ^f2 | a3a3a2 g3g3e2 | ^f16 | g^feg ^f4 g^feg ^f4 | c3c3c2 c3c3c2 | .g4 z4 z2 Bc ^fecd | B8 c4 g4 | ^f14 ^f2 | a3a3a2 g3g3e2 | ^f16 | g^feg^f4 g^feg ^f4 | c3c3c2 c3c3c2 | e8 g8 | ^f3^f3-^f2 g3a3-a2 | g3^f3-^f2-^f8 | a4 a4 g4 g4 | a16- | a3g3g2 g3e3d2 | e3^f3-^f2-^f8 | g16 | a16 | z16 | b16 |] [V:2] Bc ^fecd | B8 c4 A4 | B14 B2 | e3e3e2 e3e3c2 | B16 | BcBA B4 BcBA B4 | c3c3c2 d3d3d2 | .c4 z4 z2 Bc ^fecd | B8 c4 A4 | B14 B2 | e3e3e2 e3e3c2 | B16 | BcBA B4 BcBA B4 | c3c3c2 d3d3d2 | A8 c8 | ^f3^f3-^f2 g3a3-a2 | g3B3-B2-B8 | e4 e4 c4 d4 | e16 | ^f4 e4 d4 c4 | B3A3-A2-A8 |G16 | e16 | z16 | ^f16 |] [V:3] Bc ^fecd | B8 G4 c4 | B14 B2 | c3c3c2 B3B3A2 | B16 | G4 B4 B2A2 B4 | c3c3c2 d3d3d2 | .A4 z4 z2 Bc ^fecd | B8 G4 c4 | B14 B2 | c3c3c2 B3B3A2 | B16 | G4 B4 B2A2 B4 | c3c3c2 d3d3d2 | A8 e8 | B3B3-B2 c3d3-d2 | c3B3-B2-B8 | e4 e4 c4 d4 | c16 | ^f4 e4 d4 c4 | B3d3-d2-d8 | d16 | c16 | z16 | B16 |]