Alexander J. Morin, author of ''Classical Music: The Listener's Companion
(2001), said that the piece was "full of pathos and cathartic passion" and that it "rarely leaves a dry eye". Reviewing the premiere performance in 1938, Olin Downes noted that with the piece, Barber "achieved something as perfect in mass and detail as his craftsmanship permits". Wayne Clifford Wentzel, author of Samuel Barber: A Research and Information Guide (Composer Resource Manuals)'', said that it was a piece usually selected for a closing act because it was moderately famous. Roy Brewer, writer for
AllMusic, said that it was one of the most recognizable pieces of American concert music. The musicologist
Bill McGlaughlin compares its role in American music to the role that
Edward Elgar's
"Nimrod" holds for the British. In 1996, American musician
Billy Joel described his reaction to the piece during a Q&A appearance where a woman asks him to compose a song on the spot, as well as several interviews. Instead, Joel describes a piece that inspires him, which is the
Adagio, saying that, "This is what I love about music. This is what I want to do. This is what I want to create. It's what I've always tried to create. ... And I hope before I can't write anymore, I can create music like that.” As part of a musical retrospective in 2000,
NPR named
Adagio for Strings one of the 100 most important American musical works of the 20th century, calling it "standard repertoire for today's orchestras, and Barber's best-known work". In 2019, NPR revisited the piece, with writer Anastasia Tsioulcas suggesting it arrived at "the right moment, when America was still hurting from the Great Depression and Europe was sliding into war." She continued by noting how young people reinterpret "America's semi-official music for mourning" as an expression of joy, using the example of Dutch DJ
Tiësto's remix of
Adagio for Strings as a dance music anthem, which caught the attention of the
2004 Olympics Organizers in Athens (ATHOC) and is included on
Parade of the Athletes, Tiësto's retrospective mix of his live set performed during the opening ceremony. In 2004, listeners to the
BBC Radio's
Today program voted
Adagio for Strings the "saddest classical" work ever, ahead of "
Dido's Lament" from
Dido and Aeneas by
Henry Purcell, the Adagietto from
Gustav Mahler's
5th symphony,
Metamorphosen by
Richard Strauss, and
Gloomy Sunday as sung by
Billie Holiday. == Arrangements ==