Question: The Metropolitan Opera, often called The Met, has had which general manager since August of 2006?

Context paragraphs:
Jed Hoyer: Jed D. Hoyer (born December 7, 1973), is the executive vice-president and general manager of the Chicago Cubs.  He has been the general manager of the San Diego Padres and the assistant general manager of the Boston Red Sox.  He joined the Red Sox in 2002, after the ownership of John W. Henry, Tom Werner, and Larry Lucchino took over the team from John Harrington.  He worked under the title of assistant to the general manager until December 2005.  He then was given the title of assistant general manager.  Hoyer briefly served as co-general manager of the Red Sox from December 12, 2005 to January 19, 2006 and then returning to his previous job of assistant general manager.  In November 2003, he accompanied general manager Theo Epstein to Arizona to persuade pitcher Curt Schilling to accept a trade to the Red Sox, spending Thanksgiving at Schilling's home in what was eventually a successful effort.

The First Emperor: The First Emperor is an opera in two acts with music by Tan Dun and a libretto written in English by Tan Dun and Ha Jin.  The opera received its world premiere at the Metropolitan Opera at Lincoln Center in New York City on 21 December 2006, conducted by the composer with Plácido Domingo in the title role.  It was broadcast live to hundreds of cinemas around the world on 13 January 2007 as part of the Met Live in HD season.  The following year, EMI released this movie broadcast on DVD.  The opera was a co-production between the Metropolitan Opera and the Los Angeles Opera and was described to be the most elaborate Metropolitan opera production since "War and Peace".

Metropolitan Opera: The Metropolitan Opera, commonly referred to as "The Met", is a company based in New York City, resident at the Metropolitan Opera House at the Lincoln Center for the Performing Arts.  The company is operated by the non-profit Metropolitan Opera Association, with Peter Gelb as general manager.  The music director position is in transition as of 2016.  The music director designate is Yannick Nézet-Séguin and the music director emeritus is James Levine.

Opera News: Opera News is an American classical music magazine.  It has been published since 1936 by the Metropolitan Opera Guild, a non-profit organization located at Lincoln Center which was founded to engender the appreciation of opera and also support the Metropolitan Opera of New York City.  "Opera News" was initially focused primarily on the Met, particularly providing information for listeners of the Saturday afternoon live Metropolitan Opera radio broadcasts.  Over the years, the magazine has broadened its scope to include the larger American and international opera scenes.  Currently published monthly, "Opera News" offers opera related feature articles; artist interviews; production profiles; musicological pieces; music-business reportage; reviews of performances in the United States and Europe; reviews of recordings, videos, books and audio equipment; and listings of opera performances in the U.S.

Peter Gelb: Peter Gelb (born 1953) is an American arts administrator.  Since August 2006, he has been General Manager of the Metropolitan Opera in New York City.

Metropolitan Opera radio broadcasts: The Metropolitan Opera radio broadcasts are a regular series of weekly broadcasts on network radio of full-length opera performances.  They are transmitted live from the stage of the Metropolitan Opera in New York City.  The Metropolitan Opera International Radio Network airs the live performances on Saturday afternoons while the Met is in season, typically beginning the first Saturday in December, and totaling just over 20 weekly performances through early May.  The Met broadcasts are the longest-running continuous classical music program in radio history, and the series has won several Peabody Awards for excellence in broadcasting.

Bella Alten: Bella Alten (June 30, 1877 - December 31, 1962) was an operatic soprano who performed at the Metropolitan Opera House during the early 1900s.  Bella Alten was born in Zaskaczewo, Poland.  She studied with Gustav Engel and Joachim at the Imperial Conservatory in Berlin, and later with Aglaja Orgeni in Dresden.  Her first appearance in opera was as Aennchen in Der Freischütz in 1897 after which engagements followed in Berlin, Brunswick, Cologne and London.  She was singing Cherubino in Marriage of Figaro, Nedda in Pagliacci and Eva in Die Meistersinger von Nürnberg under Hans Richter when Heinrich Conried, the Metropolitan Opera's General Manager, heard her at the Covent Garden and engaged her for the Met.

Jay Feaster: Jay Harry Feaster (born July 30, 1962 in Harrisburg, Pennsylvania) is a National Hockey League (NHL) executive currently serving as the Executive Director of Community Hockey Development for the Tampa Bay Lightning.  He is the former general manager of the Calgary Flames, having served from May 16, 2011 to December 12, 2013, after serving as acting general manager since December 28, 2010, following Darryl Sutter's resignation.  He was the general manager of the Tampa Bay Lightning for six years, during which he was named the NHL's executive of the year by "The Sporting News" in 2004 after guiding the Lightning to their first Stanley Cup championship.

Robert Goodloe: Robert Goodloe is an American baritone who was committed to the Metropolitan Opera in New York City from 1964-1982 where he gave nearly a thousand performances.  While primarily a comprimario performer at the Met, he did portray some leading roles; including Einstein in "Die Fledermaus", Enrico in "Lucia di Lammermoor", Marcello in "La boheme", and Sharpless in "Madama Butterfly".  In 1966 he created the role of Thidias in the world premiere of Samuel Barber's "Antony and Cleopatra" for the grand opening of the Metropolitan Opera House at Lincoln Center.  His performances are preserved on several recordings made for "Live from the Metropolitan Opera" and the Metropolitan Opera radio broadcasts.

Joseph Volpe (opera manager): Joseph Volpe (born July 2, 1940) is an American opera manager and arts management consultant.  He is noted for his long association with the Metropolitan Opera, in which he served as General Manager from 1990 to 2006.  In all, he spent 42 years working at the Met in various capacities, rising rapidly to managerial positions.  Since February 2016 he has been Executive Director of the Sarasota Ballet.

Supporting paragraphs: Metropolitan Opera Peter Gelb
Answer: Peter Gelb