Is there a list of where to obtain the new 4.1 Orchestrion rolls?

[Raldo]

On the list there's two from Rhalgr's Reach that I'm unable to find. I've checked every merchant and vendor but to no avail (at least, every one I know of).

On High and Songs of Salt and Suffering. Any help is appreciated.

They are bought with red scrips. One is 400 red crafter scrips, one is 400 red gatherer scrips. They're listed under the "Lv50 Red Scrips" sub-menus.

For future reference, you can find this information easily by looking up the item in the database:
On High
Songs of Salt and Suffering