Post Malone and Ashley McBryde performed a tribute ... The "Ring of Fire" singer was with Carter Cash until her death in 2003, which was due to surgical complications from a heart valve surgery.

A second unvaccinated child has died of measles in Texas, according to state health officials and the hospital in Lubbock, Texas, that treated the child.

Although the details surrounding his death remain scarce ... YouTube video was uploaded about two weeks ago. In a previous post, he mentioned plans to move from Los Angeles to Atlanta.