Restricting all MIDI notes (21-108 or A0-C8) to range 48-59 (C3-B3)

21 => 57
22 => 58
23 => 59
24 => 48
25 => 49
26 => 50
27 => 51
28 => 52
29 => 53
30 => 54
31 => 55
32 => 56
33 => 57
34 => 58
35 => 59
36 => 48
37 => 49
38 => 50
39 => 51
40 => 52
41 => 53
42 => 54
43 => 55
44 => 56
45 => 57
46 => 58
47 => 59
48 => 48
49 => 49
50 => 50
51 => 51
52 => 52
53 => 53
54 => 54
55 => 55
56 => 56
57 => 57
58 => 58
59 => 59
60 => 48
61 => 49
62 => 50
63 => 51
64 => 52
65 => 53
66 => 54
67 => 55
68 => 56
69 => 57
70 => 58
71 => 59
72 => 48
73 => 49
74 => 50
75 => 51
76 => 52
77 => 53
78 => 54
79 => 55
80 => 56
81 => 57
82 => 58
83 => 59
84 => 48
85 => 49
86 => 50
87 => 51
88 => 52
89 => 53
90 => 54
91 => 55
92 => 56
93 => 57
94 => 58
95 => 59
96 => 48
97 => 49
98 => 50
99 => 51
100 => 52
101 => 53
102 => 54
103 => 55
104 => 56
105 => 57
106 => 58
107 => 59
108 => 48