Closer is a song by American electronic dance music duo The Chainsmokers, featuring vocals from American singer Halsey. It was released on July 29, 2016, as the lead single from their second studio album, Memories...Do Not Open (2017). The song is a tropical house song with a moderate tempo. The lyrics of the song are about a couple who are in a toxic relationship but can't seem to let go.

Closer was a commercial success, reaching number one in over 30 countries, including the United States, Canada, and the United Kingdom. The song was also certified 11x platinum by the Recording Industry Association of America (RIAA).

The song received generally favorable reviews from music critics, who praised its catchy melody, Halsey's vocals, and The Chainsmokers' production. The song was also nominated for a Grammy Award for Best Pop Duo/Group Performance.

The song's music video was directed by Daniel Kwan and Daniel Scheinert and features Halsey and The Chainsmokers performing the song in a variety of locations, including a hotel room, a pool, and a beach. The music video has been praised for its visuals and its ability to capture the song's sensuality.

Here are some of the reasons why Closer is such a popular song:

The song's catchy melody is easy to remember and sing along to.
The song's lyrics are relatable to many people who have been in toxic relationships.
Halsey's vocals are powerful and soulful.
The Chainsmokers' production is atmospheric and immersive.
The music video is visually stunning and captures the song's sensuality.

Closer is a great example of a tropical house song that has all the elements of a hit. It's catchy, sensual, and has a great message. If you're looking for a new song to add to your playlist, I highly recommend checking out Closer.

Here are some additional details about the song:

The song was written by Andrew Taggart, Alex Pall, Halsey, and Benny Blanco.
The song's title is a reference to the phrase "closer," which can mean to be physically close to someone or to be emotionally close to someone.
The song's music video was filmed in Los Angeles and features Halsey and The Chainsmokers performing the song in a variety of locations.
The song has been covered by many artists, including Fifth Harmony, Charlie Puth, and James Arthur.