Overblows vrs blow bends
There is much confusion as to what bending does vs what overblows do. Bends take a note that is built into the harmonica and make it go lower in pitch. The note or sound produced is located in between the blow note and the draw note.
Bending occurs on the draw notes on holes 1 through 6 and the blow notes on holes 7 through 10.
Overblows take a note that is built into the harmonica and make it go higher in pitch. The standard note produced is one half step (one keyboard note) higher than the note in the opposing breath direction. However, every overblow can be raised multiple half steps.
For example, 4 blow is C. 4 draw is D. When you overblow into 4 blow it alters the C and becomes D# aka Eb. This can be raised to E, F, F# G and G# and possibly further. Do you use overblows? Do you like em?