* Different Metrics: Success can be measured by sales, awards, critical acclaim, influence, or longevity.
* Subjectivity: What one person considers successful might be different for another.
* Specific Genres: Success varies across music genres and acting styles.
However, some contenders for the title of most successful musician and actor might include:
* Barbra Streisand: She's won two Academy Awards, eight Grammy Awards, four Golden Globe Awards, and a Tony Award. She's also a successful film producer, director, and writer.
* Frank Sinatra: One of the best-selling music artists of all time, Sinatra won an Academy Award for Best Supporting Actor.
* Jamie Foxx: Won an Academy Award for Best Actor, four Grammy Awards, and a Golden Globe Award. He's also had successful careers in both music and acting.
* Elvis Presley: "The King of Rock and Roll" also had a successful film career, starring in several iconic movies.
* Jennifer Lopez: A successful singer, dancer, and actress, Lopez has won a Grammy Award and has been nominated for a Golden Globe Award.
It's important to note that this list is not exhaustive and is based on a combination of awards, sales, and cultural impact. Many other musicians and actors could be considered successful depending on the criteria used.
Ultimately, the "most successful" musician and actor is a matter of personal opinion.