What is the most famous song ever recorded by Elvis Presley?

The most famous song recorded by Elvis Presley is generally considered to be "Heartbreak Hotel." Released in 1956, it became a breakthrough hit for Presley and propelled him to international fame. The song reached number one on the Billboard Hot 100 chart and remained there for eight weeks, setting a record at the time. It also became Presley's first UK number-one single.

"Heartbreak Hotel" is widely recognized for its iconic guitar intro and Presley's raw, emotional vocal performance. The lyrics tell the story of a lonely traveler who checks into a hotel and is overcome by grief, yearning for a lost love. The song is regarded as a classic of rock and roll and is often credited for helping to popularize the genre.

"Heartbreak Hotel" was Presley's first million-selling single and set the stage for his subsequent success as a global music icon. It remains one of his most recognizable songs and is frequently cited as one of the most important and influential recordings in music history.