Happiness (SOS) (original mix) - (05:11)
Happiness (SOS) (Dance Rocker remix) - (05:51)
Happiness (SOS) (Dima DJ remix) - (05:28)
Happiness (SOS) (DJ Hunter Italostyle remix) - (06:13)
Happiness (SOS) (DJ Spampy Engel remix) - (05:08)
Happiness (SOS) (radio edit) - (03:12)
Vyšlo: 22. 4. 2011