Elvis was born in '35 and Heartbreak Hotel was #1 in '56. Pre-Boomer for both singer and song.

Good point - although his fan base, like the Beatles, was largely those 10-year-old girls you can hear screaming in the background.

Boomer girls, now 65 and still hysterical.

I heard it in my car one night about ten years ago,on a blues show. The piano work really impressed me, and I got a better opinion of Wlvis then.

The first "rock & roll" I think I ever heard was Chubby Checkers doing the Twist, must have been 1959 (?)

Boy oh boy. Back in the day when Elvis appeared on the Ed Sullivan show the cameramen were instructed to keep the shots above the waist.

"Blue Suede Shoes" is a rock and roll standard written and first recorded by Carl Perkins in 1955
and is considered one of the first rockabilly (rock and roll) records and incorporated elements of blues, country and pop music of the time.
Perkins' original version of the song was on the Cashbox Best Selling Singles list for 16 weeks, and spent 2 weeks in the No. 2 position.
Elvis Presley performed his version of the song three different times on national television.
It was also recorded by Buddy Holly and Eddie Cochran among many others."

"Hound Dog" is a twelve-bar blues song by Jerry Leiber and Mike Stoller.
It was recorded by Willie Mae "Big Mama" Thornton on August 13, 1952 in Los Angeles and released by Peacock Records in March 1953.
"Hound Dog" was Thornton's only hit record, spending 14 weeks in the R&B charts, including seven weeks at #1.
Thornton's recording of "Hound Dog" is listed as one of the Rock and Roll Hall of Fame's "500 Songs That Shaped Rock and Roll",
and was inducted into the Grammy Hall of Fame in February 2013."
— Wiki:

And, she wasn't called Big Mama for nuthin. I remember some columnist back then saying she was formidable. Only time I've ever heard that word used to describe a woman.