It features Suraphol's unique vocal delivery—a blend of traditional Thai phrasing with modern (for the time) rhythmic sensibilities that defined the Luk Thung genre. Legacy & Original Record

The original version remains a staple in Thai music history and is included in various commemorative collections, such as:

Suraphol composed and wrote the lyrics himself. The song was a poignant reflection of his 16-year relationship with his wife, Srinuan Sombatcharoen , written during a period of marital strain.

The song's popularity was so immense that it inspired a biographical film of the same name released in late 1968, starring Mitr Chaibancha and Petchara Chaowarat. Musical Characteristics

16ปีแห่งความหลัง - สุรพล สมบัติเจริญ [ OFFICIAL Audio ]

On August 16, 1968, Suraphol performed this song as his closing number at a temple fair in Kamphaeng Saen, Nakhon Pathom. Minutes after leaving the stage, he was shot and killed at the age of 37.

The song is celebrated for its soulful melody and storytelling, blending the "sweet and bitter" memories of a long-term romance.