ermulation in your pocket

looking for something as small as your now under-used micro gameboy but with all those classic emulated systems like snes nes megadrive(genesis) GBA (Nintendo Game Boy Advance), Neo-Geo (SNK Neo-Geo) and CPS1 and CPS2 (CAPCOM, arcade game systems, 1st and 2nd edition) ! and also able to listen to your music ? then look no further