The ornamental design for a drummertraining apparatus, as shown and described.
FIG. 1 is a perspective view of a drummer training apparatus.
FIG. 2 is a front elevation view thereof.
FIG. 3 is a rear elevation view thereof.
FIG. 4 is a right side elevation view thereof.
FIG. 5 is a left side elevation view thereof.
FIG. 6 is a top view thereof; and,
FIG. 7 is a bottom view thereof.
The drummer training apparatus is shown with a symbolic break in its height. The appearance of any portion of the article between the break lines forms no part of the claimed design.
The broken lines are included for the purpose of illustrating portions of the drummer training apparatus that forms no part of the claimed design.