Click on the audio link to hear me play "Build Our Machine on a C harmonica. 

Tabs:

Legend: + = blow, - = draw, ' = half step bend, " = whole step bend, ( ) = chord/play at same time 

Intro train sound:

(-4 -5 -6) 

Main:

-6 -6 -6 -6 -4 -4 -6
-5 +5 -4  -3" -4 -5 -4
-3" -4 -5 -4

-4 -5 -6' -6 +6
-5 -6 -4 -5

2nd part:

-6 +6 -6 -6' -6 +6
-5 -6 +6 -5 +6 -6

-4 -4 -4 -5 -4
-4 -5 -4 -4
-4 -6 +6 -5 +5 -4

3rd part:

-5 -3" -4 -5 -4
-4 -5 -6 +6 -5 +5

-4 -3" -4 -5 -4
-3" -4 -5 -4
-4 -5 -6 +6
-5 +5 -4 -5 -4

4th part:

-6' -6 +6 -6 -6' -6
+6 -6 -6 +6 -5 +6 -6

5th part:

-4 -5 -5 -4
-4 -4 -5 -4
-4 -6 -6 +6 -5 +6 -4

Middle:

-8 -6 -8
-9 +8 +7 -8
-10 +9 -9 -8

-8 -8 -8
-9 -8 -8
-9 -8

-10......-10 +9 -8 -9
-8 -10 +9 +9 -9 -9 -8
+7 -8 +7 -8

-8 +7 -8 -9 -10 +9 +9 -9
-10 +9 +9 -9 -9 -8

Final:

use tongue block technique to block hole # 5 for (-4 -6)

(+4 +5) (-4 -5) (-4 -6)

(+4 +5) (-4 -5) (-4 -6)

(+4 +5) (-4 -5)

-10 +9 +9 -9
-10 +9 +9
-9 -9 -8

Repeat final twice.

and that's how you play Bendy and the Ink Machine.