Craft a musical piece that abides by the prescribed structural guidelines and the given theme.
X:1
L:1/16
Q:1/4=84
M:2/4
K:Bmin
['|{c} B4 d3 A F2ED', 'd3 b afef d2B2'  
X:1
L:1/16
Q:1/4=84
M:2/4
K:Bmin
 de | f2f2 (gf)(ed) |{c} B4 d3 A | F2ED D3 E | F2A2 A2(de) | f2f2 (af)(ed) |{c} B4 d3 A | 
 F2ED D2 E2 | d2B2 B2 :| d2 | A3 B d3 e |{de} f4 Te2 d2 | e2f2 a2(ba) | f2e2 e2 |1 (fa) | 
 b2b2 d'baf | a2a2 (ba)(fe) | d3 b afef | d2B2 B2 :|2 (fa) | b2d'b a2 ba | f2af egfe | d3 b afef | 
 d2B2 B2 |]  