Question: Sky and Sand is a song by German electronic music producers Paul Kalkbrenner and who?

Context paragraphs:
Berlin Calling: Berlin Calling is a 2008 German tragicomedy directed by Hannes Stöhr.  The movie depicts the events following DJ and producer Ickarus's (Paul Kalkbrenner) institutionalization for drug abuse.

Andrés Bucci: Andrés Bucci is a Chilean electronic music producer and DJ.  He is known for his solo work as well as for his role as a member of Plan V.  He is one of three Bucci brothers (Juan Pablo, Pier and Andrés), all DJs and electronic music producers.

Paul Kalkbrenner: Paul Kalkbrenner (] ) (born 11 June 1977) is a German live act, producer of electronic music, and actor from Berlin.  Because he breaks down his tracks into elements that are reassembled onstage, Kalkbrenner is considered a live act, as opposed to a DJ.  He is most known for his single “Sky and Sand,” which sold over 200,000 copies, went platinum, and was highly charted in countries such as Belgium and Germany.  He is also known for portraying the main character Ickarus in the movie, “Berlin Calling” written and directed by Hannes Stöhr, which ran for several years at Kino Central in Berlin.

Sea Star Festival: Sea Star Festival is a music festival organized by the team behind EXIT festival in Serbia.  It was held for the first time on 25–28 May 2017 at the Stella Maris resort in the town of Umag, Croatia with the attendance of 50.000 people.  Although it was planned to be a two-day festival, Day Zero was held on 25 May, as well as an after-party on the 28h of May 2017.  It was one of four festivals of "EXIT Summer of Love 2017".  The headlining acts for Sea Star 2017 included The Prodigy, Fatboy Slim, Paul Kalkbrenner, Dubioza kolektiv, Modestep LIVE, Pendulum DJ Set, Urban&4, Spiller, UMEK, Marko Nastić, S.A.R.S., Artan Lili, Bad Copy, Brkovi, Elemental, High 5&Kuku$, Pips, Chips & Videoclips, Jonathan, Kiša metaka, Krankšvester, Matter, Sassja and many more.  As many as 70 performers ranging from rock and pop acts to electronic, metal and punk performed on seven stages at the site of the festival.

Radical Connector: Radical Connector is the eighth full-length studio album by German electronic producers Mouse on Mars, released in 2004.  It has been described as "Mouse on Mars' most conventional album," and the duo's unique take on pop.  The entire album features vocals by fellow German electronic musician Niobe (tracks 3, 4, 6, 9) and drummer Dodo NKishi (tracks 1, 2, 5, 7, 8), as manipulated and sequenced by Mouse on Mars.

Pier Bucci: Pier Bucci is a Chilean electronic music producer .  He is known for his solo work and for his role in the groups Mambotur, Skipsapiens, Monne Automne and Bucci (with his brother Andrés Bucci).  He is one of three Bucci brothers – Juan Pablo, Pier and Andrés – all of whom are electronic music producers.

Phace: Phace (real name Florian Harres, also known as Neosignal, born March 7) is a German music producer, DJ and label owner living in Hamburg, Germany.  He produces a wide variety of music including drum and bass, electronica, techno, house and halftempo.  He co-owns two record labels: Neosignal and Neodigital Recordings, and has released on several other labels including Skrillex's OWSLA, deadmau5's mau5trap, Noisia's Vison and Division and has performed at international music festivals such as EDC, Beyond Wonderland, Let it Roll, UAF, Dour etc.  Phace is one of the pioneering and progressive electronic music producers of Neurofunk (also known more informally as just neuro), which is a subgenre of Drum and Bass as a progression of techstep.  Phace is also one half of the German electronic band project Neosignal (together with Michael Bräuninger/Misanthrop).  At the start of his career in 2006 he was voted Germany's "Best Drum and Bass DJ & Producers" at the Future Music Awards.  His debut album PSYCHO, released in 2007 on Teebee’s Subtitles Music imprint, was voted Album of the Month in the British Mixmag Magazine.  To the present he released 4 full length studio albums which all topped the Beatport Music Charts.

Trans-Europe Express (album): Trans-Europe Express (German: Trans Europa Express ) is the sixth studio album by German electronic music band Kraftwerk.  Recorded in mid-1976 in Düsseldorf, Germany, the album was released in March 1977 on Kling Klang Records.  The album's themes were influenced by friends who suggested writing songs about the Trans Europ Express to reflect Kraftwerk's electronic music style.  Critics have described the album as having two specific themes: a celebration of Europe and the disparities between reality and image.  Musically, the songs on this album differ from the group's earlier Krautrock style with a focus on electronic mechanized rhythms, minimalism, and occasionally manipulated vocals.

Sky and Sand: Sky and Sand is a song by German electronic music producers Paul Kalkbrenner and Fritz Kalkbrenner.  The song was originally produced as the title song of the German movie Berlin Calling written and directed by Hannes Stöhr .  It was first released on the Berlin Calling movie soundtrack album in October 2008 and in February 2009 as a single.

Giraffage: Charlie Yin, better known by his stage name Giraffage, is an American electronic music record producer.  Yin, who is of Taiwanese descent, grew up in San Jose, California, and graduated from the University of California, Berkeley with a degree in political economics before pursuing his musical career.  Most recently Yin has collaborated with other electronic music producers, including Porter Robinson.  As Giraffage, Yin regularly performs at venues in his native San Francisco Bay Area and has performed both independently and along with other artists across the world.

Supporting paragraphs: Sky and Sand Paul Kalkbrenner
Answer: Fritz Kalkbrenner