Same concept and structure, but have different panelists and people. Heart Signal is the prequel to this season's (heart Signal 4).

Same concept and structure, but have different panelists and people. Heart Signal 2 is the prequel to this season's (heart Signal 4).

Same concept and structure, but have different panelists and people. Heart Signal 3 is the prequel to this season's (heart Signal 4).

Both are crime-solving dramas.
Both have a smart, intelligent, handsome male leads.
Both have female leads that are extremely good at fighting.

Similarity:
-They're both singing competitions.
-They're both fun and entertaining to watch.
Differences:
-Super-Vocal 2 introduces and sings more songs from Chinese Musicals or Western Musicals. People who like musicals would love it. It made me realize how beautiful Chinese musicals can be through the songs sung.
-Super-Vocal 2 contestants almost all had graduated from Music Schools, with some already became established musical actors. The Singer is more varied, some being quite popular, some not that popular.

- Both the female leads in the movie change from an ugly duckling to a beautiful swan.
- Both the female leads are employed by the male leads.

Both are remakes of the original Marimar which was the 1994 Mexican TV series. So, the plot should be quite similar, though not completely the same...