My Solution

1 = C (root note)
120 bpm (bit per minute)
4/4
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♩= (1/4bar note) = 1bit
♪ = 1/2♩(1/8bar note) = 1/2bit
♫ = 2 x 1/2♩=1bit
-/↓/↑ = 1/2♩(1/8bar note) = 1/2bit
♬ = 2 x 1/2 ♪ (1/16bar note) = 1/2bit
| = bar line  
Number = Guitar Pad Position = ♪
(when without appendix mark 
default value = 1/2bit) 
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