Imogen Heap and artificial harmony

Here’s a live rendition of Imogen Heap’s song “Hide And Seek.”

Ms Heap is accompanying herself with artificial harmonies created by a Digitech Vocalist Workstation. The device reads her pitch in the manner of Auto-tune. She tells it what notes to shift her voice to using the MIDI keyboard. She also uses some digital delay for the echo effect, and towards the end, she samples herself singing the chorus so she can sing the last verse over the playback.

The result is one of the most futuristic sounds I’ve ever heard, and yet it’s also warm and intimate, not icily posthuman like you’d expect from such a high-tech performance. Because the harmony responds on the fly to her singing and keybs playing, she’s free to improvise, phrase and embellish in the moment. Real live choral harmony is cool and everything, but if you want multiple complex parts, you need to write everything out ahead of time, and conduct the singers exactly. It doesn’t leave much room for spontaneity, and spontaneity is key to truth-telling in music. When I say that “fake” technology can result in more real music, this is exactly what I mean. Here’s how Imogen Heap describes the writing of this song in an interview with Electronic Musician:

My favorite computer blew up on me, but I didn’t want to leave the studio without having done anything that day. I saw the [DigiTech Vocalist Workstation] on a shelf and just plugged it into my little 4-track MiniDisc with my mic and my keyboard and pressed Record. The first thing that I sang was those first few lines, “Where are we? What the hell is going on?” I set the vocalist to a four-note polyphony, so even if I play ten notes on the keyboard, it will only choose four of them. It’s quite nicely surprising when it comes back with a strange combination. When it gets really high in the second chorus, that’s a result of it choosing higher rather than low notes, so I ended up going even higher to compensate, above the chord. I recorded it in, like, four-and-a-half minutes, and it ended up on the album in exactly the structure of how it came out of me then. I love it because it doesn’t feel like my song. It just came out of nowhere, and I’m not questioning that one at all.

Brian Eno says that for synths to have the soul of traditional instruments, they need to be a little bit unpredictable. All the glossy perfection the computer makes possible can get to be oppressive. You get the best results when you don’t have total control, when there’s room for the happy accident. By confusing the harmony algorithms, you can get unexpected notes that sound way more hip than anything you could have worked out on paper ahead of time. It’s why I’m so addicted to Auto-tune. If you set it right, it reacts in surprising ways, live as it’s happening, opening up new avenues of expression.

Some people think that artificial harmonizers and Auto-tune are dishonest, that they’re cheating, that they’re part of a larger trend towards fakery that’s destroying western civilization as we know it. We have an abiding anxiety about the authenticity of our music. The Online Etymology Dictionary says that the word “authentic” descends from ancient Greek authentikos, meaning “original, genuine, principal.” This word in turn descends from authentes, “one acting on one’s own authority,” a composite of autos, “self,” and hentes, “doer, being.” The related word “genuine” descends from the Latin genuinus meaning “native, natural,” from the root of gignere, “to beget.” The thinking goes that the word originally referred to paternity.

I think it’s reasonable to be concerned with the parentage of our music, but it’s wrong to be repulsed by the bastardized and the mongrel. All the really exciting music is hybridized. Hip-hop combines the phrasing and improvisation of jazz with European electronic beats. Jazz combines African-American traditions with European harmonies and song structures. Let’s have some mongrel pride! The president of the United States is a self-described mutt. So am I. Purity is lame.

By the way, gorgeously recorded a capellas are irresistable to samplers, so it’s no big surprise that someone would take an interest in using Imogen Heap samples. The best example I could find is Jason Derulo’s song “Whatcha Say.” It won’t change your life or anything, but I give him props for venturing it. I feel less of an urge to sample Imogen Heap and more of an urge to get my hands on a Vocalist Workstation and try out some harmonies of my own.