Power built the Mean Fiddler Music Group from the ground up, an empire that began as a single venue and grew to one encompassing 30 venues and events.
The vocalist was also known for singing with Manilow, Bob Dylan and Mary J. Blige.
Lawrence's late wife, singer Eydie Gormé, was his "partner on stage and in life" for more than 55 years.
The band's touring keyboardist since 2008 passed away on March 2 due to complications from a sudden illness.
The rocker was diagnosed with glioblastoma in late 2022.
She coached the Colombian superstar at age 15, when Shak was preparing to sing at Chile's Viña del Mar International Song Festival.
The musician's "Dance Outta My Head" went viral after revealing that all proceeds would go to her seven-year-old son, Loren.
She performed at the famed Tropicana club in the 1940s and '50s and sang alongside artists like Nat King Cole.
The 49-year-old Ukrainian-born piano player died on Tuesday.
"His boundless creative energy has touched so many over the whole world," the group wrote.
