Statistics: works by Sparr 
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Statistics > Composers > United States > Living > Sparr, D. J.
Permalink: operabase.com/visual.cgi?season=2016&is=opera&by=Sparr
From the composers database ...
Sparr, D. J.(b.1975)
(personal/ official website)
  (email address is available to subscribing opera companies)
American composer and guitarist.
compositeur et guitarist américain.
compositore e guitarist americano.
amerikanischer Komponist und guitarist.
From New & Rare 2016/17 ...
"Lyric works designed for staging and classically trained voices, 1 Sep 2016-31 Aug 2017"
"Rare? typically fewer than 13 performance runs in the 5 seasons"
No entry found for this time period
From New & Rare 2017/18 ...
"Lyric works designed for staging and classically trained voices, 1 Sep 2017-31 Aug 2018"
"Rare? typically fewer than 13 performance runs in the 5 seasons"
No entry found for this time period
From the statistics ... works by Sparr (2012/17)
"Performance runs over the five seasons, 2012/13 to 2016/17" Can't read stats1217_workprod.csv ... aborting