Of course, it isn't as one-dimensional as it might at first appear. Here is what I wrote on Facebook a few hours ago...
While I have inevitable reservations about this, it was likely (I think almost certain) to happen sooner or later.
For the organisers, promoters and performers, it is probably being seen primarily as a gimmick, to 'up the ante' relative to others' concert tours – but there will be at least some percolation of Miku's performance and general 'aura' into the audience's consciousnesses.
This will have little immediate effect, as those attending will be there for Lady Gaga, first and foremost; but the idea of 'sowing seeds' is a useful one, and during the weeks that follow will, I think, start to pay dividends – especially if one or more complete concerts end up for sale and/or on-line.
There are those (and I am aware of at least two, probably three) who will say that this 'going mainstream' will mean the end of life as we know it – or words to that effect. I know that this will not be the case. At this stage, I have no idea what Miku will do: some of her usual material, in Japanese, some new material in English, or one or more Gaga items.I have been saying for a while now that it is my belief that 2014 is going to be the turning point in Vocaloid going global: this series of events looks like being perhaps the single biggest part of that (much broader) transformation..
Perhaps there will even be a duet at the end of her (presumably quite short) set, which would make an excellent handover from the support act to the main feature. It would be almost a world first – though SeeU has done this with GLAM several times, and there have been others. The novelty factor with thiese audiences, though, would be quite something, if this were attempted.
Whatever comes out of this, I remain convinced that it will help the Vocaloid concept and sheer quality to seep into the western collective consciousness. The real global future in the genre starts here...