Monday saw Cameroon international Song finalise his £15million move away from north London, signing a five-year contract. After seven seasons with Arsenal, in which the club was unable to land any silverware, Song is relishing the prospect of joining a team that has made trophy-winning a habit.
The 24-year-old said: "(I am) very happy to be here, this is the best team in the world, playing at a club like Barca is something I wanted when I was young. I hope the team will continue to win, this is a winning team. They win everything. I will give my best on training and when I get the chance to play I will do it."
Song believes his former Arsenal team-mate Cesc Fabregas, now established as a key figure at the Nou Camp a year after moving from the Emirates Stadium, can help him settle.
He said: "I know Cesc very well, I slept at his house (on Sunday). He's a very good friend of mine, he will help me to integrate."
Song joined his new team-mates for the official team presentation at the Joan Gamper Trophy at the Nou Camp on Monday night, where the Catalan club face Sampdoria.
He received a standing ovation from the Barcelona support, having become the club's second major signing of the summer following the capture of Spain full-back Jordi Alba from Valencia.
Song could make his debut on Thursday when Barcelona play Real Madrid in the first leg of the Spanish Supercopa.