Music Musically, +44 was envisioned as a natural extension of the songwriting evolution Hoppus and Barker had begun in blink-182—melding punk roots with electronic textures and elements of '80s new wave. The music of the album is influenced by artists such as
the Postal Service,
Missing Persons, and
the Cure. The album experiments with unusual song structure and temperaments, and the first six tracks of the album alternate between uptempo rock songs and ballads. According to Corey Apar of
AllMusic, +44's original electronic influence is evident in the music, although it has "ultimately [taken] a backseat to guitar-driven rock". Ben Yates of
Drowned in Sound felt that the album started strong with Blink-182-esque songs, however delved into "
emo choruses and handed-down pop-punk riffs" for the bulk of the tracklist. while Apar of felt it was
alternative rock.
Song analysis The record opens with "Lycanthrope", which was intended to introduce the band but leave the listener guessing. "Baby Come On" was written halfway through the recording process and serves as an assessment of "what the band is about." It contains
electronic drums and
synthesizers that thicken a slow build throughout the track. The title track, "When Your Heart Stops Beating", features "snotty, mid-range British-sounding
Telecasters" and was inspired by the story of
Sid Vicious and
Nancy Spungen — "you love your lady and outside of that, fuck everything else," according to Hoppus. "Little Death" is a moody,
lo-fi song that went through numerous changes throughout the recording, beginning in Barker's basement. It was intended as an allegory to what Hoppus and Barker dealt with after the breakup of Blink-182. Hoppus felt both "hopeful and defeated" while writing the song, and intended to make it an appreciation of life after hard events. In addition, he was inspired by the various methods of communication in the 21st century, and how they can often result in too much or too little conversation, especially among loved ones. "155" is a heavily layered synth-driven track that contains handclaps and "
Cure-esque guitars." The handclaps were Barker's idea, who noticed its prevalence in
hip-hop songs and wanted to incorporate into a rock song. "Lillian" features programmed drums and acoustic guitars, and was inspired by Hoppus' residence in San Diego, before the move to Los Angeles. "I lived in a part of San Diego that's one of the most beautiful places in the country, but it's also one of the most evil sickening places," said Hoppus. "People are just ugly to one another." The title was inspired by a woman who started a strict
homeowners association in the city. "Cliff Diving" was inspired by Hoppus' teenage summers growing up, where he would embark upon his friend's house and dive into the pool from the rooftop. The track is therefore about "embracing the unknown," further incorporating influence from the breakup of Blink-182 and the beginnings of +44. "Interlude" is most representative of the earliest work Hoppus and Barker put together. It was placed as a musical break to separate the upbeat
pop punk track "Cliffdiving" and the record's "darkest" song, "Weatherman". That track is another early composition that was written directly following the breakup of Blink-182. "I was driving to Travis' house and the whole Blink thing had just gone down […] We had been talking about making a really dark, dirty song." The song was launched from the line "Just let me slip away, I'm barely holding on," and the music was intended to reflect that theme. The song most directly inspired by the end of Blink-182 is "
No, It Isn't", which was also inspired by feelings of betrayal afterward. "[The song] is about coming out a year later and telling the truth," Barker said. "For a year, people were saying that what Tom did was valid or called for. It eats at you. So maybe you have to talk about it, and maybe you have to write a song about it." The Postal Service influence is noticeable in "Make You Smile", which makes frequent use of boy-girl exchange and lament. The song was initially dubbed "Puppy Killing Machine" — a name created by Heller that Hoppus deemed "so ridiculous" in relation to its upbeat, poppy nature. The anthemic "Chapter 13" closes the record and was inspired from chapter 13 of ''
Dante's Inferno'', which revolves around
suicide. "I had this image in my head of a guy seeing a woman across a crowded room and in that instant, he knows exactly what's going to happen: He falls in love with her, goes crazy, and kills himself in a hotel room," said Hoppus. "That's a good way to end the album, huh?" ==Promotion==