Question: A choir () (also known as a quire, chorale or chorus) is a musical ensemble of singers. Choral music, in turn, is the music written specifically for such an ensemble to perform. Choirs may perform music from the classical music repertoire, which spans from the Medieval era to the present, or popular music repertoire. Most choirs are led by a conductor, who leads the performances with arm and face gestures.

Composers of the late 18th century became fascinated with the new possibilities of the symphony and other instrumental music, and generally neglected choral music. Mozart's choral works, though not as numerous as his works for other media, stand out as some of his greatest (such as the "Great" Mass in C minor and Requiem in D minor, the latter of which is often considered the greatest Requiem Mass of all time). Haydn became more interested in choral music near the end of his life following his visits to England in the 1790s, when he heard various Handel oratorios performed by large forces; he wrote a series of masses beginning in 1797 and his two great oratorios The Creation and The Seasons. Beethoven wrote only two masses, both intended for liturgical use, although his Missa solemnis is probably suitable only for the grandest ceremonies due to its length, difficulty and large-scale scoring. He also pioneered the use of chorus as part of symphonic texture with his Ninth Symphony and Choral Fantasia.  In the 19th century, sacred music escaped from the church and leaped onto the concert stage, with large sacred works unsuitable for church use, such as Berlioz's Te Deum and Requiem, and Brahms's Ein deutsches Requiem. Rossini's Stabat mater, Schubert's masses, and Verdi's Requiem also exploited the grandeur offered by instrumental accompaniment. Oratorios also continued to be written, clearly influenced by Handel's models. Berlioz's L'enfance du Christ and Mendelssohn's Elijah and St Paul are in the category. Schubert, Mendelssohn, and Brahms also wrote secular cantatas, the best known of which are Brahms's Schicksalslied and Nanie.  A few composers developed a cappella music, especially Bruckner, whose masses and motets startlingly juxtapose Renaissance counterpoint with chromatic harmony. Mendelssohn and Brahms also wrote significant a cappella motets. The amateur chorus (beginning chiefly as a social outlet) began to receive serious consideration as a compositional venue for the part-songs of Schubert, Schumann, Mendelssohn, Brahms, and others. These 'singing clubs' were often for women or men separately, and the music was typically in four-part (hence the name "part-song") and either a cappella or with simple instrumentation. At the same time, the Cecilian movement attempted a restoration of the pure Renaissance style in Catholic churches.

Using a quote from the above article, answer the following question: What is most interesting about music of this type?
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Answer: In the 19th century, sacred music escaped from the church and leaped onto the concert stage, with large sacred works unsuitable for church use, such as


Question: Michael Anthony Orlando Cassavitis (born April 3, 1944), known professionally as Tony Orlando, is an American singer, songwriter, producer, music executive, and actor, best known as the lead singer of the group Tony Orlando and Dawn in the 1970s. Orlando formed the doowop group The Five Gents in 1959 at the age of 15, with whom he recorded demos, and got the attention of music publisher and producer Don Kirshner. Kirshner hired him to songwrite at 1650 Broadway, Manhattan as part New York's thriving Brill Building songwriting community, along with other songwriters Carole King, Neil Sedaka, Toni Wine, Barry Mann, Cynthia Weil, Bobby Darin, Connie Francis, and Tom and Jerry, who didn't make it in the office until they later changed their name to Simon and Garfunkel. Orlando was also hired to sing on songwriter demos, and singles released with Orlando as a solo artist began to hit the charts in the US and the UK beginning in 1961 with "Halfway to Paradise" and "Bless You" when he was 16.

Orlando was tempted back to a recording career when he was asked to record a demo record of "Candida", with backup singers including Toni Wine (who wrote the song) and Linda November. Concerned about a possible conflict of interest with his April-Blackwood duties, Orlando sang under the condition that his name not be associated with the project, so it was released under the simple name of "Dawn", the middle name of the daughter of Bell records executive Steve Wax.  The song became a hit, and Dawn, with Wine and November again singing backup, recorded another song, "Knock Three Times", which itself became a #1 hit. Orlando then wanted to go on tour, and asked two other session singers, Telma Hopkins and Joyce Vincent Wilson to join for the tour. Orlando then discovered that there were six touring groups using that name, so Dawn became "Dawn featuring Tony Orlando", which changed to Tony Orlando and Dawn in 1973.  The new group recorded more hits, including "Tie a Yellow Ribbon Round the Ole Oak Tree" (1973) and "He Don't Love You (Like I Love You)" (1975), a cover of the Jerry Butler hit, "He Will Break Your Heart". With a successful recording career, Orlando then set his sights on television. As described in The San Francisco Chronicle, "Tony Orlando and Dawn burst out of television sets during the Ford administration, a sunny antidote to the dark cynicism that followed Watergate. He represented simple, traditional values, a conservative return to pure entertainment. He drew a happy face in the "O" of his autograph. It was not terribly cool, but America loved him." The Tony Orlando and Dawn Show on CBS became a hit, a summer replacement for the Sonny & Cher show, and ran for four seasons from 1973 to 1976. It welcomed the biggest names in show business each week as Orlando's guests, including his boyhood idols, Jackie Gleason and Jerry Lewis.  At the 1976 Republican National Convention in Kansas City, Missouri, Orlando danced to the tune of "Tie a Yellow Ribbon" with then First Lady Betty Ford. The media stated that it was to divert attention as Nancy Reagan entered the Kemper Arena convention hall. However, in Orlando's book Halfway to Paradise, he states that Mrs. Reagan was asked what her favorite song was, which happened to be "Tie a Yellow Ribbon", so it was chosen as her entrance song. Ronald Reagan unsuccessfully challenged Gerald Ford, for the presidential nomination that year but came back in 1980 to claim the presidency itself. Ray Barnhart, a Reagan co-manager from Texas, criticized Mrs. Ford for having "danced a jig" with Orlando. Barbara Staff, another Texas co-chairman, called Betty Ford's behavior "a low, cheap shot". It was later confirmed that the Ford campaign slipped the song to the band when Nancy Reagan entered the hall.  On October 12, 2015, with Telma Hopkins and Joyce Vincent Wilson present, Pacific Pioneer Broadcasters honored Orlando with their Art Gilmore Career Achievement Award at a celebrity luncheon.

Using a quote from the above article, answer the following question: was Knock Knock a hit as well?
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Answer:
which itself became a #1 hit.