Rhythm & Drums is the first studio album by trance duo Cosmic Gate.
 It was released on February 19, 2001 in Germany.
 The song "Somewhere Over the Rainbow" appeared in the video game "DDRMAX Dance Dance Revolution 6thMix".
No More Sleep is the second studio album by hard trance duo Cosmic Gate.
 It was released on July 8, 2002 in Germany.
Converting Vegetarians is a two-disc set album by the Israeli psychedelic trance duo Infected Mushroom.
 It is their fourth studio album.
 The album was released by BNE/Yoyo Records in 2003 (see 2003 in music).
 The first disc consists of psychedelic trance tracks, while the second disc is more experimental and eclectic, with the band exploring many genres from ambient/electronica to synthpop .
 The music on the second disc clearly paved the way for the exploration of genres featured on their later albums.
Nic Chagall (born Claus Terhoeven; 10 November 1972 in Krefeld, North Rhine-Westphalia, Germany ) is a German trance music producer and DJ best known for being one half of the German trance duo Cosmic Gate.
 He also co-founded Essential Cuts Studio in Duisburg, Germany in 1999, now better known as E-CUTZ, where he also works with Erich Schmeier (a.k.a. DJ Errik) and Andre Wevers (a.k.a. DJ Wave) and also has his own radio show, "Get The Kicks" on Afterhours.FM.
Legend of the Black Shawarma is the seventh studio album by psychedelic trance duo Infected Mushroom released on 8 September 2009.
 The album is named after a shawarma, a Middle Eastern wrap/sandwich; the equivalent of the döner kebab in Turkey or the gyros in Greece.
 The title was also inspired by Shawarma Hazan, a shawarma restaurant where Erez and Amit used to eat in their hometown, Haifa.
Earth Mover is the third studio album by Hard trance duo Cosmic Gate.
 It was released on September 18, 2006 in Germany.
The Gathering is the debut studio album by the Israeli psychedelic trance duo Infected Mushroom.
 The album forms dark and organic atmospheres that are usual in Goa or psychedelic trance.
 The cover art was done by Israeli artist Eyal B.
 The album was released on 28 April 1999 worldwide
Sign of the Times is the fourth studio album by trance duo Cosmic Gate.
 It was released on March 23, 2009 in Germany.
 A deluxe edition was released and included remixes of the original songs by other DJs such as Arty and Markus Schulz.
Cosmic Gate is a German DJ duo consisting of Trance producers Claus Terhoeven (born 1972) and Stefan Bossems (born 1967).
 Both hail from Krefeld, Germany.
GMS (also known as the Growling Mad Scientists) is a Dutch psychedelic trance duo which has attained significant popularity, beginning in the early 1990s.
 Formed by Shajahan Matkin (also known as Riktam) and Joseph Quinteros (also known as Bansi) in the city of Amsterdam, located in the west of The Netherlands, the duo has attracted a large international fanbase.
 GMS founded Spun Records in 1999, the first psychedelic trance label in the United States and Ibiza, Spain.

Question: Rhythm & Drums is the first studio album by a trance duo who hail from which city in Germany ?
Answer: Krefeld