I’ve never used Alias for anything like this. You may be over thinking this. If you want to layer, you just create multiple routes in a Song:
Main Keyboard -> Omni -> Piano Rack
Main Keyboard -> Omni -> String Rack
Main Keyboard -> Omni -> Synth Pads
etc.
Within each of the above routes, you can filter by channel. Instead of Omni, you can say From Ch 1 to Ch 3 (for example).
I’m away from my setup or I could send you screen shots. With each route, you can filter by keyboard maps, channel, velocity, etc.
I have my racks set up like this: **Piano (**Kontact New York listening on CH 1, and on channel 2 a Kontakt bank of various Uprights, Rhodes, Wurlitzer, Clav, Harp, etc). Also in the Piano rack, I have Lounge Lizard for other E.Piano sounds. There are Rack States that use Routes and filters within the rack to send to combinations of Kontakt sounds and LL sounds. For example, there are Rack States named Piano+Rhodes, Wurlitzer, Clav, Upright, etc.–maybe 10 or 12 Rack States. Then (for example) I have a Pads Rack with FM8, another instance of Knotakt with a bank of classic synth pads, and Korg M1. The Rack states for this rack are AiryPad, Accordion, SynthBrass, etc. Then I have Orchestra rack, Organ rack, etc. Each has 10 to 12 sounds that I use a lot. When I converted from Forte, I didn’t try to be exhaustive, i.e. I didn’t try to create every possible known sound. As I need a new sound, I will create it.
Once all of these racks were created, each with 10 so sounds, I created 5 “Template” songs. They were: Piano/Organ Split, Piano/Strings layer, Horn Section, Full Orchestra, etc. I made routes that were splits and/or layers as required for the 5 templates.
Next I used the 5 templates to create a number of songs. I probably had to go back and create a few more templates once I had a song that required something I hadn’t created (e.g. Pipe Organ/Orchestra Layer).Creating the song involved adding the racks I needed then creating routes that implemented the splits or layers as needed. After that, there are a few fiddly things that are required to get the volume and patches as required. For the most part, SONG States take care of remembering those settings. Every song I create has at least one Song state. For example, for my Church gig, almost every hymn has 4 sections. Typically 1 is Piano or Piano/Rhodes layer only; 2 keeps Piano and adds strings; 3 builds on strings and maybe adds brass; 4 is the big finish and I add B4 or Pipe Organ. So each time we reach the end of a section, I press the “Next Song State” button (implemented with a Cantabile BINDING) and Cantabile changes all the patches and volumes–just like Forte sub-sections.
Once a had a few templates and songs assembled, it was fairly simple to take one of the templates and modify it for a new song. Once I got the hang of the workflow, it’s much faster than Forte. But like Forte, once a song is done, I can go right back to it. As long as I haven’t changed the rack states the song uses, it is identical.
Hope this helps. If not maybe I can do a better job when I can get some screen shots for you to see.
Richard