Some music-finding apps will let you sing into the microphone and could potentially identify a song. Using these tools, you’ll be able to identify the next song you come across. These apps can identify a song for you just by humming the melody or singing. Know the best song identifier methods identifying playing songs. These apps identify songs based on just a few seconds of playback. Here's how to get that song out of your head. Check 10 free ways to identify that song stuck in your head.