Abstract
What day could you first purchase "It Will Rain" on iTunes?
It Will Rain
I Wanna Go Crazy Unstoppable (Girl Talk album) A Year Without Rain (song) Shadow of the Day Live in Texas
I_Wanna_Go_Crazy-Composition Unstoppable_(Girl_Talk_album)-Abstract A_Year_Without_Rain_(song)-Background_and_composition Shadow_of_the_Day-iTunes Live_in_Texas-iTunes
Guetta commented about the track on his website. "The brand new track "I Wanna Go Crazy" with will.i.am is OUT NOW and available exclusively from iTunes. You can get the track now and it will count towards a "complete my album" purchase when the new album "One Love" drops on 25 August. 
Unstoppable is second studio album by American musician Girl Talk, released on April 6, 2004 by Illegal Art. Similar to Girl Talk's other releases on the Illegal Art label, Illegal Art made "Unstoppable" available for purchase on their website through a "pay what you want" pricing system. It is also his only remaining album available for purchase on the iTunes Store, following the removal of "Night Ripper" (2006) over sample clearance issues. 
In August 2010, a demo of the song, sung by singer Selin Alexa leaked online. Becky Bain of Idolator called the song a "mature dance track" and said that it "wouldn’t entirely be out of place on a Sophie Ellis-Bextor album." In an interview with MTV News, Gomez said that "A Year Without Rain" was the first song she recorded for the album. She also explained why she named the album for the song, commenting, "I feel like that song has a lot of meaning, and it also kind of was the start of what I wanted to base all the other songs around." A Spanish-language version of the song titled "Un Año Sin Ver Lluvia" was released through the iTunes Store on October 26, 2010. "A Year Without Rain" is a dance ballad, written by Toby Gad and Lindy Robbins, with a length of three minutes and twenty-nine seconds. It was also produced by Gad. Musically, the track uses a standard pop structure and derives from the genre of Eurodance, backed with a techno beat. According to sheet music published at Musicnotes.com by EMI Music Publishing, "A Year Without Rain" is set in common time and has a tempo of 120 beats per minute. It is written in the key of F major and follows the chord progression of C–Gm–Dm–F. Gomez's vocals in the song span from F3 to E5. Lyrically, the song sees Gomez longing for the object of her affection and compares it to a year without rain: "I need you by my side/ Don't know how I'll survive/A day without you is like a year without rain." According to Megan Vick of "Billboard", the sound of the song contrasts with its "tender" lyrics. 
The "Shadow of the Day" music video is available on iTunes, along with a Behind the Scenes exclusive featurette. On October 23, 2007, iTunes made a video album which was entitled the Single of "Shadow of the Day". The video album included the music video (which can be purchased for $2.29) and the Behind the Scenes video (which is free when you purchase the full album). 
The live performances of "Points of Authority" and "Lying from You" are available for purchase on iTunes for $2.29 each. 