No, this isn't some deeply weird slash fiction, instead it is a the theme song from Doctor Who performed on Tesla Coils.
The familiar theme was performed by the band/mad scientist cabal ArcAttack at Chattacon 34 in Chattanooga, Tennessee earlier this year, utilizing a unique set up of their own creation.
I'm not going to pretend that I completely understand the science behind it, but the creators have very kindly tried to explain in on their website:
ArcAttack employs a unique DJ set up of their own creation (an HVDJ set up) to generate an 'electrifying' audio visual performance. The HVDJ pumps music through a PA System while two specially designed DRSSTC's (Dual-Resonant Solid State Tesla Coils) act as separate synchronized instruments.
These high tech machines produce an electrical arc similar to a continuous lightning bolt which put out a crisply distorted square wave sound reminiscent of the early days of synthesizers. The music consists of original highly dance-able electronic compositions that sometimes incorporates themes or dub of popular songs.
Yeah, what they said...
Source: Boing Boing