長尾大
During the album's production and mastering phase, Avex requested Hamasaki to hand-pick her favourite singles past-2001. Nearly every single from her three studio albums: "A Song for ××", "Loveppears" (1999), and "Duty" appeared on the compilation album. Knowing that the material was still insufficient, Hamasaki reluctantly re-recorded three tracks; "Trust", "Depend on You", and the non-album single "A Song for...". Hamasaki had to re-record the tracks whilst recording the material for "I Am...". The tracks "Boys &amp; Girls" was re-composed by Japanese musician Dai Nagao, whilst retaining Hamasaki's original vocals. The track "End Roll" was re-recorded by Hamasaki, and re-composed by Nagao. Hamasaki selected the tracks "M" and the non-single "Who..." to be included on the album; "Who..." did not feature the hidden track "Kanariya", which appeared on "Loveppears". "M" appeared on the "I Am..." album, and whilst the studio album also spawned the singles "Evolution" and "Never Ever" before the compilation's release, they were not included.