The song ends with the phrase "Our funny traveling tale," which directly mirrors Roger’s decision to name the final island Laugh Tale .
Luffy first heard the song from Shanks’ crew. It was later revealed that the Roger Pirates sang it during their final journey to Laugh Tale , suggesting it held special meaning even for the Pirate King. Deep Lore and Theories
Depending on the tempo and instrument, the song's mood shifts completely. A fast piano version is a "jolly party song," while a slow violin version acts as a "requiem" or funeral dirge.
Its most heart-wrenching appearance occurs during the death of Brook’s original crew. As they succumbed to poison, they performed "Binks' Sake" one last time, with the number of instruments dropping one by one until only Brook was left to finish the song on his piano.
Oda specifically wanted a song that sounded like a traditional sailor shanty.
Some interpret the "song of the deep sea" mentioned in the final verse as a cryptic reference to the Three Ancient Weapons. Musical Composition