The first ever user of Sibelius was the composer and engraver Richard Emsley, who provided advice on music engraving prior to the start of development, and beta tested the software before its release. The first concert performance from a Sibelius score was of an orchestral work by David Robert Coleman, copied by Emsley. The first score published using Sibelius was "Antara" by George Benjamin, also copied by Emsley, and published by Faber Music. Other early adopters included composer John Rutter, conductor Michael Tilson Thomas, and publisher Music Sales.