Coordinated with her May and July 2015 residency at Las Vegas' Caesar's Palace, #1 to Infinity features all 18 of Mariah Carey's number one pop hits, the basis of those celebratory performances. The anthology presents the songs in chronological order, from "Vision of Love" (1990) through "Touch My Body" (2008), and is therefore the first compilation to combine Carey's Columbia and Island material. Additionally, there's a new breakup song, the first three-and-a-half minutes of which are an elaborate and mystifying set-up for a display of Carey's whistle range. Given the timing, #1 to Infinity is undoubtedly opportunistic, but it updates and improves upon 1998's "#1's" anthology.A1 Vision of Love 3:29 A2 Love Takes Time 3:49 A3 Someday (MTV Unplugged) 3:57 A4 I Don't Wanna Cry 4:48 A5 Emotions 4:08 B1 I'll Be There 4:24 B2 Dreamlover 3:53 B3 Hero 4:17 B4 Fantasy (Bad Boy Fantasy) 4:53 B5 One Sweet Day 4:41 C1 Always Be My Baby 4:18 C2 Honey 4:59 C3 My All 3:51 C4 Heartbreaker 4:46 C5 Thank God I Found You 4:17 D1 We Belong Together 3:22 D2 Don't Forget About Us 3:53 D4 Touch My Body 3:27 D5 Infinity 3:58