[1] A music video, directed by Tim Nackashi and produced in collaboration with The Creators Project, was released on September 13.

[4] Era Extraña was recorded from the winter of 2010 to 2011 at Kalevankatu 45 in Helsinki, Finland, when Palomo lived there for four weeks.

[8] Larry Fitzmaurice of Pitchfork found "Polish Girl" to be similar to the song "Reunion" (2004) by Canadian band Stars, seeing a resemblance to its theme of someone trying to recover, and yearning for, young love.

[9] Drowned in Sound reviewer Robert Cooke noted the "dazzling syncopated pulse" to be similar to the coin sound effect in games from the Mario series, while observing melodies that "splash and slide around sickly-sweet flurries of arpeggios and a family-friendly feel-good beat".

[10] Parry Ernsberger of Blurt said that the song includes what sounds like samples from the game Super Mario World (1991), and has the "euphoric energy" of Cut Copy's album Zonoscope (2011).