Compose harmonizing chords for the given musical piece.
[BD][cF] | [dB]2 [BF]2 | [fd]4 | [dB]2 [BF]2 | [fd]4 | [ec][dB] [ec][ge] [fd][ec] | 
 [dB]2 [bd]2 [fB]2 | [dB]2 [BF]2 | [fd]4 | [dB]2 [BF]2 | [fd]4 | 
 [ec][dB] [ec][ge] [fd][ec] | [dB]2 z2 :: [cA][BG] | [AF]2 [AF][cA] | 
 [BG]2 [BG][dB] | [cA]2 [cA][ec] | [dB]2 [dB][fd] | [ge]2 [cA][ec] [ec][cA] | 
 [fd]2 [BF][dB] [dB][BF] | [AF]2 [AF][cA] | [BG]2 [BG][dB] | [cA]2 [cA][ec] | 
 [dB]2 [dB][fd] | [ge]2 [cA][ec] [ec][cA] | [BF]2 z2 :|  
X:1
L:1/8
M:23/44
K:Bb
 [BD][cF] |"Bb" [dB]2 [BF]2 | [fd]4 |"Bb" [dB]2 [BF]2 | [fd]4 |"F7" [ec][dB] [ec][ge] [fd][ec] | 
"Bb" [dB]2 [bd]2 [fB]2 |"Bb" [dB]2 [BF]2 | [fd]4 |"Bb" [dB]2 [BF]2 | [fd]4 | 
"F7" [ec][dB] [ec][ge] [fd][ec] |"Bb" [dB]2 z2 :: [cA][BG] |"F7" [AF]2 [AF][cA] | 
"Eb" [BG]2 [BG][dB] |"F7" [cA]2 [cA][ec] |"Bb" [dB]2 [dB][fd] |"F7" [ge]2 [cA][ec] [ec][cA] | 
"Bb" [fd]2 [BF][dB] [dB][BF] |"F7" [AF]2 [AF][cA] |"Eb" [BG]2 [BG][dB] |"F7" [cA]2 [cA][ec] | 
"Bb" [dB]2 [dB][fd] |"F7" [ge]2 [cA][ec] [ec][cA] |"Bb" [BF]2 z2 :|  