Compose a piece of music by integrating the assigned letter representation and provided tune.
X:1
L:1/16
M:6/8
K:Bb
['(B/d/f3) .f2 (B/e/g3).g2 |{g} (f2>e2)d2 c2B2A2 (B2>c2)Bc', 'B2{cBA}B>cB>c d2{edc}d>ed>e']  
X:1
L:1/16
M:6/8
K:Bb
 (B/d/f3) .f2 (B/e/g3).g2 |{g} (f2>e2)d2 c2B2A2 | (B2>c2)Bc (d2>e2)de | f2e2d2 (c2>B2)A2 | 
[M:6/8] B2BcBc d2dede | f2e2d2 c2>B2A2 | (B2>A2)G2 F2B2D2 | E2C2F2{E} D2>C2B,2 | B2BAG2 F2B2D2 | 
 E2C2F2 D4 B,2 :|"^1st Variation" z (B/d/f2).f2 z (B/e/g2).g2 | f2gfedc2B2A2 | 
 B2{cBA}B>cB>c d2{edc}d>ed>e | f2gfed dcecBA | B2{cBA}B>cB>c d2{edc}d>ed>e | 
 z (fbagf) (gedc) (BA) | (cB)(BA)(AG) (GF)(FE)(ED) | (ED)(CDEF) EDCD B,2 | 
 (cB){c}(BA){B}(AG){A} (GF){G}(FE){F}(ED) | (EDCG)(FE) D2 B,4 ||  