Background: Conacher was born in Toronto, Ontario on May 24, 1900. His middle name was given after the South African city of Pretoria, where British troops were fighting the Boer War at the time of his birth. He was the eldest son of Benjamin and Elizabeth Conacher, and the third of ten children overall. He had four brothers and five sisters.
Context: Conacher scored the first goal in Pirates history on American Thanksgiving Day Thursday November 26, 1925, against the Boston Bruins. He scored nine goals in 33 games in 1925-26, then returned to Toronto to play professional baseball with the Toronto Maple Leafs. An outfielder on the team, Conacher and the Maple Leafs won the International League championship then defeated the Louisville Colonels to win the Little World Series.  He returned to Pittsburgh for the 1926-27 NHL season, but was dealt early in the year to the New York Americans in exchange for Charlie Langlois and $2,000. The trade nearly proved disastrous for Conacher. He scored 8 goals in 1926-27 and improved to 11 in 1927-28, but playing for a team owned by notorious bootlegger Bill Dwyer resulted in his becoming a heavy drinker. Conacher served as player-coach in 1929-30, but his play and health had deteriorated. Two events in that off-season saved Conacher: he swore off alcohol completely upon the birth of his first child, and his playing rights were sold to the Montreal Maroons.  Conacher periodically struggled with Montreal, and at one point was placed on waivers with no other team willing to take over his contract. Nonetheless, his overall play and point totals increased for three consecutive seasons with the Maroons, peaking at 28 points in 1932-33. He was named to the Second All-Star Team that season, but was traded to the Chicago Black Hawks in exchange for Teddy Graham. Conacher was a key figure in the club's first-ever Stanley Cup victory that season. He finished second to the Canadiens' Aurel Joliat in the voting for the Hart Trophy and earned a spot on the NHL's First All-Star Team.  On Wednesday October 3, 1934, Conacher was involved in one of the largest transactions in league history. He was dealt to the Montreal Canadiens, along with Leroy Goldsworthy and Roger Jenkins in exchange for Montreal superstar Howie Morenz, Lorne Chabot and Marty Burke. The deal was only part of a series of trades involving four teams that represented one of the biggest deals in NHL history. Immediately following the Chicago trade, Conacher was sent back to the Maroons, along with Herb Cain, in exchange for the rights to Nelson Crutchfield. Conacher spent his last three NHL seasons with the Maroons and won his second Stanley Cup in 1935. He ended his hockey career after the team was eliminated from the playoffs by the New York Rangers on April 23, 1937. That final year he was runner-up to Babe Siebert in the 1937 Hart Trophy voting and was placed on the NHL Second All-Star Team.
Question: Where did he play?
Answer: then returned to Toronto to play professional baseball with the Toronto Maple Leafs.

Problem: Background: Alfred Cellier (1 December 1844 - 28 December 1891) was an English composer, orchestrator and conductor. In addition to conducting and music directing the original productions of several of the most famous Gilbert and Sullivan works and writing the overtures to some of them, Cellier conducted at many theatres in London, New York and on tour in Britain, America and Australia. He composed over a dozen operas and other works for the theatre, as well as for orchestra, but his 1886 comic opera, Dorothy, was by far his most successful work. It became the longest-running piece of musical theatre in the nineteenth century.
Context: In December 1877 Cellier joined the D'Oyly Carte company as musical director at the Opera Comique in London. There he conducted The Sorcerer (1877), H.M.S. Pinafore (1878, for which he wrote the overture, based on themes from the opera), Trial by Jury (1878), George Grossmith's Cups and Saucers (1878-79), and three of his own one-act works: Dora's Dream (1877-78 revival), The Spectre Knight (1878), and After All! (1878-79). Cellier was conducting the performance of Pinafore during which the partners of The Comedy Opera Company attempted to repossess the set, and he was noted for his attempts to calm the audience during the fracas. His brother, Francois, succeeded him as musical director at the Opera Comique in 1879. Alfred Cellier was a conductor of a series of promenade concerts at the Queen's Theatre, Long Acre and, in 1878-1879 he was joint conductor, with Sullivan, of the Covent Garden Promenade Concerts.  In 1879, he travelled with Gilbert, Sullivan, and Carte to America, where he acted as conductor for Pinafore and The Pirates of Penzance, with Carte's first American touring company. Cellier prepared the overture to Pirates using Sullivan's music from the rest of the score. Back in London in July 1880, he directed the music at the Opera Comique for Pirates and another of his own pieces with Desprez, In the Sulks. In April 1881, he left the D'Oyly Carte company, ceding the baton to his brother. Cellier composed a three-act grand opera, Pandora, a version of Longfellow's The Masque of Pandora (with a libretto by B. C. Stephenson) that was presented in Boston in 1881. He returned to America later that year as music director of D'Oyly Carte's New York and touring productions of Billee Taylor (1882), Les Manteaux Noirs and Rip Van Winkle (both in the fall of 1882), and Iolanthe (1882-83), for the latter of which he prepared the New York overture.  In 1883, Cellier's setting of Gray's Elegy, in the form of a cantata, was produced at the Leeds music festival. In 1883, Cellier left the D'Oyly Carte company, but he was back for brief periods as music director with D'Oyly Carte's touring companies for Princess Ida (1884) and The Mikado (1885). In 1885, also, Cellier composed incidental music for a production of As You Like It. He composed two more companion pieces that had Savoy Theatre premieres: The Carp (performed with The Mikado and Ruddigore in 1886-87), and Mrs. Jarramie's Genie (composed together with his brother Francois, with libretti by Desprez, which played together with several different operas at the Savoy between 1887 and 1889).  While in London, Cellier conducted at several London theatres, including the Criterion, the St James's, and the Savoy. Later, as a result of ill health, he resided abroad, notably in America and Australia, where he was a representative for the D'Oyly Carte company.
Question: what was the most popular one he directed?
Answer: