On May 4, 2018, "Lucid Dreams" was officially released as a single and accompanied by a Cole Bennett-directed music video, similarly to "All Girls Are the Same". It peaked at number two on the Hot 100 and quickly became one of the most streamed songs of 2018; it remains his most-streamed song, reaching over one billion streams on Spotify by January 2020. "Lucid Dreams" was followed by "Lean Wit Me" on May 22, which peaked at number 68 on the Hot 100; Higgins' debut full-length album, "Goodbye &amp; Good Riddance", which included his three previous singles, released the following day. On June 19, he released a two-song EP titled "Too Soon.." in remembrance of, and dedicated to, deceased rappers Lil Peep and XXXTentacion. Lil Peep died of an overdose in 2017 and XXXTentacion was shot and killed during an attempted robbery on June 18, 2018, one day before the project was released. Higgins said that he and XXXTentacion were friends and that they would have FaceTime calls together, revealing that their last conversation was about meeting up. The cover of the "Too Soon.." EP is a screenshot of a conversation between Higgins and XXXTentacion. The song "Legends" from the EP debuted at number 65 on the Hot 100 and peaked at number 29 over a year later following Higgins' death.