IPhone q: can you play music and silence all interruption alerts/calls?

I have an iPhone 4 and am going to be using it tonight as a dance party DJ, hooked up to speakers. It's just occurred to me that I don't want the music to be interrupted by text messages or calls. How can I do this? Does iPhone 4 have airplane mode, and would that do the trick? Is there a way just to silence the alert so I could still SEE texts, but not have it interrupt the music?

I don't know about the iphone 4 but the iphone 5 has a Do Not Disturb setting

Go to settings and turn on the Do Not Disturb, if you are on iOS 6. You can also set the settings so it's only for a certain time period and a few other things. You can still go see the texts and check them because music will play in the background of apps on any iPhone.

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