"It was a very good game for the fans too, they were behind us and it was important to win this game against a big team at home.
"Everyone gave their best - we're all very happy and now we have to look forward to the next game against Manchester United.
"You can see that we've had some good players come in. We need to work together and when we've had a couple of games and get to know each other well I think you'll see a very good side.
"It's a pleasure for me to be in this team. We have to keep pushing the way we played against Liverpool, because we showed what we can achieve this season."
The Hammers created several chances as they established a 2-0 lead in the opening period and also had to show their defensive qualities, so Song was thrilled with the all-round performance.
He added: "They pulled the goal back to make it 2-1, but we were strong, showed good character and then killed the game.
"It shows we work hard on defending every single day, but also that we could still go forward. We need to keep on working because we don't want to just beat Liverpool, we want to keep pushing on.
"I'm feeling very good and I'm very happy to be here. The fans and my teammates have been great.
"I played 60 minutes on Saturday and that was good for me. I need a couple of games to get up to 100 percent and then I'll be able to help the team like I did on Saturday."