Asamoah Gyan is expected to quickly become a big influence inside the Sunderland locker room.
As part of the Ghana squad which reached the last eight of the World Cup in South Africa, Gyan was an integral part of maintaining the Black Stars' famous team spirit.
He revealed the group of players did this through singing, which formed a major part of their preparations whether in the dressing room, the team hotel or even on the pitch.
Gyan explained to safc.com: "Singing is very important to us. With Ghana I am the leader of the songs.
"When we are in training camp we try to psyche the players up by singing. They think I have a good voice to boost the confidence of the team.
"John Mensah can tell you more about that!
"Our mentality is very united. We like to sing all the time in camp.
"When we are there we forget about the game and don't put pressure on ourselves.
"We crack jokes and sing all the time - this is our way of psyching ourselves up."