Online services work like music-identifier apps, referencing an online database to try to match your query. But music-identifier websites have varying methods: some take the audio route by capturing your voice via a microphone, while others use lyrics or analyze an uploaded audio file. Here are some of the best free online services that will help you name that tune. Midomi uses voice sampling, which can be helpful to identify a song that has already played but is still fresh in your mind. Sing, hum, or even whistle the tune. Midomi’s website is easy to use, and all you need is a microphone, whether it’s built-in or an external device attached to a computer. For times when you can’t use a music ID app to sample a song in real-time, Midomi comes in handy. The website is easy to use and gives good results, even though its music news isn’t maintained. The website is community-based; all you have to do is post a sample, and others listen and quickly offer answers. The service works well and provides fast results unless your input is obscure or inaudible.