Construct a musical work following the provided guidelines and thematic elements.
X:1
L:1/8
Q:1/8=180
M:6/8
K:Bb
['F2 B', 'c2 f'  
X:1
L:1/8
Q:1/8=180
M:6/8
K:Bb
 D/E/ | F2 B F2 B | F2 B d2 B | F2 c e2 d | dcB c2 F | F2 B F2 B | F2 B d2 e | f2 B g2 B | 
 BcA B2 |: B | A2 c c2 f | B2 d d2 f | c2 f f2 a | gf=e f2 c | A2 c c2 f | B2 d d2 f | c2 f d2 b | 
 ag=e f2 _e | d2 c B2 e | d2 c B2 F | G2 B F2 f | fed c2 e | dec B2 e | dec B2 b | f2 b gbe | 
 dec B2 :|  