Final answer:
The sing-along equipment that plays a prerecorded musical accompaniment to popular songs so an amateur singer can sing with the music is the Karaoke Machine.
Step-by-step explanation:
The sing-along equipment that plays a prerecorded musical accompaniment to popular songs so an amateur singer can sing with the music is the Karaoke Machine. It allows singers to follow along with the lyrics displayed on a screen while the music plays in the background. The machine typically includes a microphone and speakers to amplify the singer's voice.
Unlike a Synthesizer or Phonograph, which are musical instruments or playback devices respectively, a karaoke machine is specifically designed for singing along with pre-recorded music. A Microphone Stand is a separate accessory that holds the microphone for convenient use, but it is not the primary sing-along equipment.