Despite delays in publishing the first version, Igor Engraver was widely praised for its unprecedented ease of use and revolutionary user interface.
(This feature first appeared in the notation program Composer's Mosaic, but Igor's is one of the earliest implementations, well before those of Sibelius and Finale.)
In 2002, Peter Bengtson retired from active involvement in the company, which is now owned by Björn Ulvaeus (formerly of the pop group ABBA), Christer Sturmark (a Swedish author, I.T.
entrepreneur and debater on religion and humanism), Per Gessle (a member of the pop groups Gyllene Tider and Roxette), and Cons T. Åhs (a computer science researcher).
[3] The original Igor website URL www.noteheads.com redirects now to the page of Christer Sturmark; no new version of the program has been released.