Officers say that a man went into the Tropicana music shop (610 South Terrell Street) on the evening of February 25th.
The robber then pointed a black handgun at the cashier and demanded money.
The robber then reportedly reached over the counter and grabbed a white Community National Bank bag that had about $1,136 in it.
The robber then allegedly took off from the scene.
Police say that the robber was a Hispanic man with a mustache who was in his 40's.
The man was reportedly 6'3" tall and had a large build.
Officers say the robber was wearing a black cap, a black jacket and blue jeans.
Anyone with information on this robbery should call Midland Police at (432) 685-7108.