STEPHEN JOSHUA SONDHEIM, a composer and lyricist whose best-known works include “West Side Story,” “Gypsy,” “Sweeney Todd,” “Sunday In The Park With George” and “Into The Woods,” passed away suddenly today at the age of 91 after spending THANKSGIVING at his home in ROXBURY, CT.SONDHEIM received an OSCAR, eight TONY AWARDS (including a LIFETIME ACHIEVEMENT honor in 2008), eight GRAMMY AWARDS, a PULITZER PRIZE, and a 2015 PRESIDENTIAL .