Progressive - probably one of the most debatable terms in EDM culture today. How often do you hear a tune and go "is this Progressive House or Progressive Trance"? If you're as much indulged into the scene as most of us here are, this question is one that constantly poses itself upon you. This is why I am set to attempt at briefly clarifying the notions in order to help you be a little more accurate in your labels.
We all know the unmistakable difference between House and Trance - House is often alluded such adjectives as "repetitive", "monotonous", "funky", "jazzy", while Trance is often attributed such descriptions as "uplifting", "melodic", "psychedelic", "euphoric", regardless of the sub-genres of the track at hand. One common trait that can be found in both genres however is Progressive, and can equally be found in Rock. The reason why I'm bringing up the issue of Progressive Rock is because this is specifically where the Progressive sound was born, and not in EDM as most beleive, and it is thus imperative to trace the etymology of the word to its etiology (i.e. trace its meaning to its origin). Progressive Rock's main feature was, obviously, the progression of elements: the various components of the song would slowly build-up to reach a climax where they are all synchronizing in harmony.
This is can surely be found in both House and Trance, however, as I indicated earlier, there is much dispute on the nature of particular tracks that seem to oscillate between both genres. Take, for example, Tilt's The World Doesn't Know, a track we all adore - is it Progressive House or Progressive Trance? Tough one to answer... The beat seems structured on House rules, while the melody is so trancy that Armin was hammering this baby for months non-stop... Some people just go on naming it "Progressive" without specifying the genre; you can do that I guess, just as you can label it either Progressive Trance or Progressive House, both connotations are correct in this case. This is because what we are talking about here is the new progressive sound, or what I personally call New-School Progressive, a fusion of House & Trance that seems to have fused their distinct crowds and made its way through the tracklists of top jocks from both genres.
New School Progressive is currently my favorite genre (feel free to use my expression anytime by the way), but if I was to introspect on my past taste, Progressive Trance holds the thrown there compared to the other sub-genres of this beautiful music. Back in the old days, Progressive House was easily recognized away from Progressive Trance - the Sasha & Digweed sound for the former via the Airwave & Push sound for the latter. Airwave & Push still are my personal favorite producers, and they still hold true to the original sound of Progressive Trance while assuring its evolution and thus its survival. Just listen to Airwave's 2004 album I Want To Believe or Plastic Boy's (just another alias for Push/Mike) latest It's A Plastic World and you'll get a firm grip on what I call Old-School Progressive Trance is all about.
I hope now you'll be able to tell the difference between Old-School Progressive Trance and New-School Progressive that integrates both House and Trance into one magical combination. But in the end of the day, labeling a track as being of this or that genre or sub-genre is just for classification purposes - good music is what we all seek, and good music can be found anywhere, from the deep forest tribes to your favorite DJ's microchip.
Oh and I want to see this section more active!