Question: Alex Cox and Yannis Smaragdis are both involved in which aspect of filmmaking?

Context articles: Three Businessmen
Revengers Tragedy
El Greco (soundtrack)
Yannis Smaragdis
Repo Chick
Alex Cox
El Greco (2007 film)
Homecoming Song
God Loves Caviar
Searchers 2.0

Three Businessmen is a 1998 surreal comedy film.
 It is a British-Dutch-American coproduction directed by Alex Cox and written by Tod Davies, who was also the producer.
 Two businessmen, played by Miguel Sandoval and Cox, wander Liverpool in search of a meal.
 After wandering through Liverpool, they end up at various locations throughout the world and are eventually joined by a third businessman, played by Robert Wisdom.
Revengers Tragedy is a film adaptation of the 1606 play "The Revenger's Tragedy" (attributed to Thomas Middleton in the credits, following the current scholarly consensus).
 It was directed by Alex Cox and adapted for the screen by Cox's fellow Liverpudlian, Frank Cottrell Boyce.
 The film stars Christopher Eccleston as the revenge-obsessed Vindice, with Derek Jacobi as the evil Duke, Eddie Izzard as his lecherous son Lussurioso, Diana Quick as the Duchess, Andrew Schofield as Vindice's brother Carlo (a version of the play's Hippolito), Carla Henry as his virtuous sister Castiza, and Marc Warren and Justin Salinger as the Duchess's sons Supervacuo and Ambitioso.
El Greco Original Motion Picture Soundtrack is a soundtrack album featuring the music score for the 2007 film "El Greco", by Greek electronic composer Vangelis, released in Greece and Cyprus by Universal Music Greece.
 The film, directed by Yannis Smaragdis, follows the life of Greek painter, Doménicos Theotokópoulos, as he travels to Italy and Spain where he becomes known as El Greco (The Greek).
 Vangelis previously worked with Yannis Smaragdis on his 1996 movie about the Greek poet Kavafis (a.k.a. Cavafy).
 It won the award for best music score at the 48th Greek State Film Awards in 2007.
Iannis Smaragdis (Greek: Γιάννης Σμαραγδής ) is a Greek film director.
Repo Chick is a 2009 American comedy film written and directed by Alex Cox.
 Like Cox's first feature, "Repo Man", it centers on the repossession trade and a mysterious vehicle with a large reward.
 It is the second of Cox's "microfeatures", produced for a very low budget and given very little theatrical distribution.
 Although not a sequel to "Repo Man", it has been associated with it.
 It was released on DVD in North America and the United Kingdom in February 2011.
Alexander "Alex" Cox (born 15 December 1954 in Bebington, Cheshire) is a British film director, screenwriter, nonfiction author, broadcaster and sometime actor, notable for his idiosyncratic style and approach to scripts.
 Cox experienced success early in his career with "Repo Man" and "Sid and Nancy", but since the release and commercial failure of "Walker", he has directed his career towards independent films.
El Greco is a Greek biographical film about the life of the Greek painter of the Spanish Renaissance, Domenicos Theotokopoulos, known worldwide as El Greco.
 Based on the fictionalized biographical novel, "El Greco: o Zografos tou Theou" ("El Greco: the Painter of God"), by Dimitris Siatopoulos, it was released in 2007, directed by Yannis Smaragdis and written by Jackie Pavlenko.
 The main cast features prominent contemporary Greek actors like Lakis Lazopoulos, Dimitra Matsouka and Dina Konsta, and includes popular actors of the Greek cinema of the 1960s such as Sotiris Moustakas and Katerina Helmi, who, along with Juan Diego Botto, Laia Marull and others, surround the leading actor, Nick Ashdon, who portrays El Greco.
Homecoming Song (Greek: Το Τραγούδι της Επιστροφής , translit.
 To tragoudi tis epistrofis) is a 1983 Greek drama film directed by Yannis Smaragdis.
 It was entered into the 13th Moscow International Film Festival.
God Loves Caviar (Greek: Ο Θεός αγαπάει το χαβιάρι , translit.
 O Theós agapáei to chaviári; in Russia known as Pirates of the Aegean Sea) is a 2012 Russo-Greek drama film directed by Yannis Smaragdis.
Searchers 2.0 is a 2007 road film directed by Alex Cox.
 It stars Del Zamora and Ed Pansullo.
 Described by Cox as a "microfeature," it was shot on digital video in 10 days for a budget of $180,000.
 Lacking distribution, it featured a very limited theatrical run of one-night showings at various theaters throughout 2007 and 2008, followed by its premier on BBC in the UK, and eventual DVD release in Japan and North America.
 It is a significant movie in Cox's career as it marks his first comedy and his first feature-length original screenplay to be produced since "Straight to Hell", 20 years prior.