So far, I just watched the first 50 minutes of this lecture. Bedrossian basically introduced what he will be talking about, and he also played his 2012 work
Itself, for orchestra, which is a pretty riveting work the more you listen to it. Without hearing the rest of the lecture (which I'll do tomorrow), my first impressions are:
I think at first glance, the OP's equivalence of saturationism = hyper-spectralism seems to be spot on. Bedrossian has emphasized a few times already in the lecture that he is more influenced by the spectralist approach to sound than by Lachenmann's approach. But also when listening to
Itself, you can hear the sound layers chosen in such a way so that you don't hear any of the "seams" demarcating the individual instruments (not counting the occasional solo sections in the work, where obviously you know the instrument). This implies a pretty firm knowledge of acoustics and of the harmonic spectra of instruments. Not even Grisey and Murail seem to achieve this level of proficiency and this level of "seamlessness". So saturationism might just be thought of as spectralism done really really well.
And yet, putting it that way makes Bedrossian's music sound derivative, when my ears say otherwise. For one thing, the fact that the resulting sound is a seamless, organic, indivisible whole gives one the impression of a free-floating sound untethered to the instrumentalists, like it just drifted into the auditorium from the outside and is passing through. With other pieces, when you are able to ground the musical sounds to the musicians (using your ears), you're able to say things like "this sound comes from musician x and not musician y", "that sound comes from musician y and not musician x", "this sound previously came from musician x and now no longer does", "this sound previously did not come from musician x and now does". Such statements are necessary preconditions for establishing in your head the counterpoint, harmony, rhythms of the piece. But with the Bedrossian piece, these statements are denied to you -- or at least, denied to you immediately. Therefore, you're prevented from picking up, for example, the counterpoint or rhythm, though no doubt they exist (or do they?). Or perhaps Bedrossian has in mind a sort of acousmatic listening experience where you need to locate these things without resorting to the source of the sound in your explanation.
But if this is what Bedrossian is going after, then saturationism is, also a departure from spectralism, despite it being a "hyper-spectralism" simultaneously. Spectral music, despite it being pretty radical in other ways, requires a somewhat traditional mode of listening since, though you do listen to the resulting sound complex, you're expected to appreciate how the different parts contribute to the whole. But in Bedrossian, you don't get the opportunity to decipher the parts.
The more I think about it, the more I think this approach to timbre is pretty groundbreaking.
Here's the program note to
Itself:
Itself pursues the project of a musical form essentially rhythmicised by the unfolding and transformation of sonic material. From this perspective, a certain number of questions -- which can already be found in the majority of my previous works, notably Charleston (2005), It (2005-2007) and Swing (2009) -- return here for development on the scale of the symphony orchestra.
Colour through Excess
Among various problems, phenomena of saturation in music occupy a special and recurring place in my work, though the word itself must be understood in a twofold sense: as excess and colour. In terms of material, the virtual omnipresence of complex sounds proved decisive in the composition of Itself, as the harmonic construction often results from an accumulation of sonic layers -- and this extreme density is itself a contributing factor in modifying the perception of overall colour. The excess of sound is combined here with the proliferation of musical information, whether of a rhythmic or a contrapuntal nature. This particular association has a tendency to weaken or even destroy the hierarchies between the different dimensions of the musical discourse, most of all the supremacy of pitches. In this respect, saturated phenomena take on a perceptual and structural function in this piece. Time and form can thus be understood as a consequence of the (de)composition of these events, which hold the potential for dramatic tension.
Distortion and Irony
This tension, which is partly connected to the excess of the material, can never be without some irony -- and the distortion of the orchestral model is one of the aesthetic problems posed in this work. The constant use of complex sounds and the accumulation of instrumental techniques also serve the purpose of moving away from the orchestra as such, yet without disowning it. The result is a special dialogue between tradition and its codes, like a slightly cruel game that involves subverting signs of emotion and prestige. This can produce expressive ambiguity, which then feeds off acoustic ambivalences and other corruptions of memory.
I chose once again to adopt a falsely objective title, the ultimate avatar of this ironic energy -- and undoubtedly a way of reaffirming the idea that, because of the concert situation, a piece of music has no choice but to live through itself in order to say the things that elude us.
Here's the commercial recording: