IN: Tosca (Italian pronunciation: ['toska; 'toska]) is an opera in three acts by Giacomo Puccini to an Italian libretto by Luigi Illica and Giuseppe Giacosa. It premiered at the Teatro Costanzi in Rome on 14 January 1900. The work, based on Victorien Sardou's 1887 French-language dramatic play, La Tosca, is a melodramatic piece set in Rome in June 1800, with the Kingdom of Naples's control of Rome threatened by Napoleon's invasion of Italy. It contains depictions of torture, murder and suicide, as well as some of Puccini's best-known lyrical arias.

According to the libretto, the action of Tosca occurs in Rome in June 1800. Sardou, in his play, dates it more precisely; La Tosca takes place in the afternoon, evening, and early morning of 17 and 18 June 1800.  Italy had long been divided into a number of small states, with the Pope in Rome ruling the Papal States in central Italy. Following the French Revolution, a French army under Napoleon invaded Italy in 1796, entering Rome almost unopposed on 11 February 1798 and establishing a republic there. Pope Pius VI was taken prisoner, and was sent into exile on February 20, 1798. (Pius VI would die in exile in 1799, and his successor, Pius VII, who was elected in Venice on 14 March 1800, would not enter Rome until July 3. There is thus neither a Pope nor papal government in Rome during the days depicted in the opera.) The new republic was ruled by seven consuls; in the opera this is the office formerly held by Angelotti, whose character may be based on the real-life consul Liborio Angelucci. In September 1799 the French, who had protected the republic, withdrew from Rome. As they left, troops of the Kingdom of Naples occupied the city.  In May 1800 Napoleon, by then the undisputed leader of France, brought his troops across the Alps to Italy once again. On 14 June his army met the Austrian forces at the Battle of Marengo (near Alessandria). Austrian troops were initially successful; by mid-morning they were in control of the field of battle. Their commander, Michael von Melas, sent this news south towards Rome. However, fresh French troops arrived in late afternoon, and Napoleon attacked the tired Austrians. As Melas retreated in disarray with the remains of his army, he sent a second courier south with the revised message. The Neapolitans abandoned Rome, and the city spent the next fourteen years under French domination.

What significance did not having a Pope have in the play?

OUT: The new republic was ruled by seven consuls; in the opera this is the office formerly held by Angelotti, whose character may be based on the real-life consul Liborio Angelucci.

input: D'Angelo signed a publishing deal with EMI Music in 1991 after catching the attention of record executives through a demo tape, which was originally by the group. After an impressive audition for EMI execs, a three-hour impromptu piano recital, D'Angelo was signed to a recording contract in 1993. A&R-man Gary Harris was primarily responsible for his signing, while manager Kedar Massenburg helped negotiate the contract as well. Massenburg became D'Angelo's manager after hearing of him through "the buzz on the streets". He had previously managed hip hop group Stetsasonic and formed the artist management-firm Kedar Entertainment in 1991, which he diversified into production, music publishing and publicity.  In 1994, his first significant success came in the form of the hit single "U Will Know". D'Angelo co-wrote and co-produced the song for the all-male R&B supergroup Black Men United, which featured R&B singers such as Brian McKnight, Usher, R. Kelly, Boyz II Men, Raphael Saadiq and Gerald Levert. D'Angelo composed the music for "U Will Know", while his brother, Luther Archer, wrote the lyrics. Originally featured on the soundtrack to the film Jason's Lyric (1994), the single peaked at number 5 on the Hot R&B/Hip-Hop Singles & Tracks and at number 28 on the Billboard Hot 100. The music video for "U Will Know" featured D'Angelo as the group's choir director; he reprised the role for the live performance of the song at the Soul Train Music Awards. That same year, he wrote and produced the song "Overjoyed" for the Boys Choir of Harlem, which appeared on their studio album The Sound of Hope (1994). The success of "U Will Know" helped build the buzz surrounding D'Angelo, which was followed by a number of highly promoted showcases, and added to the buzz among music industry insiders.  Brown Sugar was released in June 1995. Although sales were sluggish at first, the album was eventually a hit. The album debuted at number six on the US Billboard Top R&B Albums chart in the week of July 22, 1995. It ultimately peaked at number four in the week of February 24, 1996, and spent a total of 54 weeks on the chart. Brown Sugar also spent 65 weeks on the Billboard 200 and peaked at number 22 on the chart. It sold 300,000 copies within its two months of release. The album had been selling 35,000 to 40,000 copies a week through to November 1995, and by January 1996, it had sold 400,000 copies. With the help of its four singles, including the gold-selling Billboard Hot 100 hit "Lady" and R&B top-ten singles "Brown Sugar" and "Cruisin", the album reached sales of 500,000 copies in the United States by October 1995. On February 7, 1996, it was certified platinum by the Recording Industry Association of America, following shipments in excess of one million copies in the U.S. The album was certified gold in Canada on May 9, 2000. Its total sales have been estimated within the range of 1.5 million to over two million copies.

Answer this question "What was his first single?"
output:
In 1994, his first significant success came in the form of the hit single "U Will Know".