Humming The Lights is a Progressive Trance song by Armin. You might be wondering who is Gaia? ;-) When there are no vocals in this song, how can it feature someone else as its artist? Well, Gaia is a duo composed of Armin himself along-with his frequent collaborator Benno de Goeij. Benno has co-written & co-produced many of Armin's songs. They use this alias for their darker productions & they perform with their faces covered ;-)
Coming back to song, Humming The Lights was included as a bonus track in Armin's fifth studio album Intense. It has got a dark melody that gives an impression of a suspense-thriller movie's soundtrack. Gradually it turns into an anthemic sonic experience. There are 3 distinct melodies & a gorgeous bassline all giving a euphoric feel to it. Don't know why, but I always feel good whenever I listen to this song. For a change, it makes me forget my worries with its dark, engaging sound. It doesn't make you dance, but it surely makes you feel better :-)
Below is the Full Version of Humming The Lights.
Oh, and yeah if you prefer the live performance, below is Armin performing it live in Tomorrowland 2013 with an amped tempo aka BPM which turns it into more of a dance track :-) But yes, he is performing it as Armin & not Gaia, so his face is visible :-D