Develop tuneful melodies adhering to the specified letter notation and including the supplied thematic aspect.
X:1
L:1/8
M:3/4
K:Bb
['B,A, B,C B,A,', 'B,A, B,C', 'C B,G, F,B,- B,C CB,/B,/ B,A, B,']  
X:1
L:1/8
M:3/4
K:Bb
 z D | B,>G, F,B,- B,>C | C/B,B,/ B,A, B,C | B,A, F,B,- B,>C | B,A, B,A, B,C | B,A, F,B, z C |]: 
 CC C3 C | B,G, F,B,- B,C | C/B,/B, B,A, B,C | B,G, F,B, z C | CB,/B,/ B,A, B,C | 
 B,A, F,B, B,/ z/ C :| CC C3 C | B,G, F,B,- B,C | CB,/B,/ B,A, B, z |]  