Final answer:
Akon sings the song 'Lonely' which was released in 2005.
Step-by-step explanation:
The song 'Lonely' is performed by Akon. It was released in 2005 as part of Akon's debut studio album 'Trouble'. The song became an international hit, reaching the top 5 in several countries. 'Lonely' is a pop/R&B ballad that explores themes of heartbreak and loneliness.