Make Your Favorite Song Available Instantly to All Your Friends
"Happy Birthday To You" is a traditional song traditionally sung on a birthday to celebrate the celebrant's day. According to the Guinness World Records, it's the third most recognized tune in the English Language, next to "O Holy Night" and "I Remember You". The song can be played at various times of the day (the longer version is suitable for kids), and it can also be incorporated into other occasions, such as an anniversary party, or as a message of friendship. In the past, some phones included the capability to play the song, but this was a few years back, and it's unlikely that any phones currently on the market will allow this.
The best way to use an app to make your birthday song readily available to all your friends, however, is to use an officially licensed character song. There are several characters to choose from, including Happy Birthday To You (also known as Falcon Infosol), which features a wide variety of characters (mostly birds and animals) that wish you a happy birthday via song. This makes the application really personal - you can choose to listen to it whenever you want. You can also use the free version of the app to make messages of friendship to other Bluetooth users. The free version doesn't allow you to actually compose messages to other people; you have to send them by email.
In order to make the birthday song with name app available to all your friends, however, you should use a program that has both the iPhone version and the PC version. Such programs are available online, and they integrate seamlessly with the websites that host the iPhone and PC versions of the app. You can then choose to have the song played constantly on your phone (so long as it's not in default playing mode), or you can set up a timer to play the song for you at a certain time.