 The song appears on several occasions from different stages of the recording process and in different formats on "The Pet Sounds Sessions" box set, including the song in its original monophonic mix; the first ever original stereo mix of the song, which was remastered by Mark Linett; over seven minutes of highlights from the tracking date, which documents the progress of the recording of the instrumental track; the finished instrumental track; the stereo track with the background vocals; an a cappella mix of the song; and two alternate mixes of the song one of which has a slight difference lyrically.In it, the song begins with the line "wouldn't it be nice to live together, in the kind of world where we belong", instead of the finished version of the song which opens with the line "wouldn't it be nice if we were older, then we wouldn't have to wait so long" and follows with the aforementioned lyric.The 2001 stereo remix of the song restores Mike Love's original bridge vocal, utilizing a mono mix, which causes slight phasing and sound quality issues.