tracks of the "2 Become 1" maxi-single in the US. A Spanglish edit that traded verses between the English and Spanish versions was created by DJ Mike Rizzo and production director Bill Schultz for New York-based radio WKTU. Composition "2 Become 1" is a pop ballad with R&B influences, written in the key of F major; it is set in the time signature of common time and moves at a slow tempo of 72 beats per minute. The song is constructed in a verse–chorus form, and its instrumentation comes from a guitar, an electronic keyboard, and string instruments. The song opens with an instrumental introduction, with a chord progression of Em add9–D/F–G–Am7 sus4, that is also used during the first part of the verses. The last two lines of each verse changes the progression to C–Bm7–Am7–D11, and changes again during each chorus to G–D–C–D. It closes with a string outro that uses the chord progression F–G–B–C, which is arranged by Scottish composer Craig Armstrong. The lyrics focus on how the bonding of two lovers can become so strong that they practically become one entity, through the act of sexual intercourse. Apart from the sexual connotations, there is an aspirational undercurrent to the lyrics, and like many of their subsequent songs, desire is explicitly linked to ambition: "Free your mind of doubt and danger/Be for real don't be a stranger/We can achieve it/We can achieve it". Two different versions of the song, each with different lyrics, were recorded: in the album version, the two first verses are sung by Melanie C and Melanie Brown, Emma Bunton sings the pre-choruses, the next second two verses are sung by Melanie C and Geri Halliwell, and the first and third lines of the chorus are sung by Bunton and Halliwell together and the second and fourth lines are sung by Melanie C and Victoria Beckham. The second line of the second verse, "Any deal that we endeavour/Boys and girls feel good together", was changed in the single version to: "Once again if we endeavour/Love will bring us back together". Halliwell sings on the album version, while Beckham sings on the single version, after Halliwell confessed that she had a hard time singing on that particular key. Bunton later stated that the lyric change was necessary after realising that the group had become LGBT icons. Despite the original lyrics still being used in album pressings