Bunny Sigler (born Walter Sigler, 27 March 1942, Philadelphia, Pennsylvania) is a pop and R&B songwriter and record producer who has done extensive work with the team of Kenny Gamble and Leon Huff, and who was instrumental in creating the "Philly Sound" in the early 1970s. He is nicknamed "Mr. Emotion."

Sigler has worked with most of the artists associated with the Philadelphia stable including The O'Jays, The Roots, Jackie Moore, Harold Melvin & the Blue Notes, Barbara Mason, Billy Paul, Lou Rawls and Stephanie Mills. He also co-wrote "The Ruler's Back", the opening song on the widely respected and critically acclaimed album The Blueprint by Jay-Z.

Originally a performer, Sigler first recorded for the V-Tone Records label in 1959. He has also recorded for the Decca, Parkway, Gamble, Philadelphia International and Gold Mind labels. Gold Mind, headed by Philly guitarist/writer/producer/arranger Norman Harris was a subsidiary of Salsoul Records.

Walter Sigler sang the "23rd Psalm" at the ceremony awarding the Congressional Gold Medal to the Tuskegee Airmen on March 29, 2007, at the United States Capitol. [1]
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Former Phillie Randy Wolf was quoted as saying "Wow...just wow" after seeing a live concert during a game in Philadelphia. He likes to add random words to the National Anthem, and remix it too.