Which singer was not a member of The Mouseketeers on the US 1989–1995 TV show "The All-New Mickey Mouse Club"?

The well known cast members of "The All-New Mickey Mouse Club", also called Mouseketeers, who appeared on TV from 1989 to 1995, were Keri Russell, Christina Aguilera, Justin Timberlake, Ryan Gosling and Britney Spears. Ricky Martin was not a member. The show was the starting point for several famous pop superstars and actors. Spears, Aguilera, Timberlake, JC Chasez, Russell, and Gosling all obtained future stardom after being on the show.

"The All-New Mickey Mouse Club" was a reboot of the 1950's Mickey Mouse Club, featuring comedy sketches, commercial parodies, music videos, celebrity guests, and a cast of talented young performers. It was a half-hour version of the 1950's series and was designed for children eight to 12 years old. In the new club, the young members also loved to act, sing, and dance. Each day featured a separate theme as well as dramatic serials.

Now, Encyclopedia Britannica notes that Enrique Martín Morales, better known as Ricky Martin, (b. December 1971 in San Juan, Puerto Rico) is a singer, songwriter, actor, author, record producer, and humanitarian. He has become known as the "King of Latin Pop" and the "Latin Music King". He began his career at age 12 with the all-boy pop group Menudo. In 2021, at home in Los Angeles, CA, he's a husband and dad, with 4 kids under the age of 13. Additionally, he has released 2 new extended play (EP) recordings in 2020, "Pausa" (slower songs and ballads) and "Play" (more up-tempo songs). He still loves singing!