Ne-Yo and Akon have added an additional Dublin date to their tour, following an increased demand. Akon is known for songs such as 'Smack That' featuring Eminem, and 'Lonely', which samples Bobby Vinton's 1964 track 'Mr.Lonely'. In 2013, Ne-Yo and Akon collaborated on David Guetta's 'Play Hard'. On Tuesday, the duo surprised fans with a performance of the track at the Amazon Music Lot Party in California. Watch Ne-yo and Akon surprising fans at the Amazon Music Lot Party: