Give a stream of consciousness and then the final answer. "Mind Playing Tricks on Me" is a single by the Geto Boys, featured on their 1991 album We Ca n't Be Stopped. The lyrics used within describe various mental states such as posttraumatic stress disorder. The sample used in the song is "Hung Up On My Baby" by Isaac Hayes from his 1974 film Tough Guys. It was the only number-one single (chart: Hot Rap Singles) ever released by the Geto Boys. It reached # 23 on the Billboard Hot 100, making it the highest charting single by the Geto Boys. It was also certified Gold by the RIAA. It has been regarded as one of the best hip hop songs to come out of the 90's.

Based on this passage, who sing my mind playing tricks on me?
The relevant information to answer the above question is: "Mind Playing Tricks on Me" is a single by the Geto Boys, featured on their 1991 album We Ca n't Be Stopped.
So, the final answer is the Geto Boys.