Incomplete is the first single from the Backstreet Boys album Never Gone, released in June of 2005. The power ballad is the group's first single since they decided to reunite after four years of separation, became one of their most successful singles, peaking at #13 in the Billboard Hot 100 and debuting at #1 on the Australian ARIA charts, selling 250,000 units worldwide, which earned it gold status. Incomplete is the first Backstreet Boys single to ever reach #1 on the Australian charts. It has also reached #8 on the UK Singles Chart, #1 in Italy, #3 in Switzerland, and #4 in the Netherlands.