I can confirm that SIEL was bought by Roland in 1987 (as written in
http://www.soundonsound.com/sos/jan05/articles/roland.htm ). The staff remained almost the same, but Roland provided its technology to the Italian team that started producing a lot of successful arrangers like E-series and G-series.
[This message has been edited by o3bor (edited 02-27-2006).]
[This message has been edited by o3bor (edited 02-27-2006).]