Question: The Mark of the Maker and Cocksucker Blues, are films of what genre?
Context: Classic female blues was an early form of blues music, popular in the 1920s.  An amalgam of traditional folk blues and urban theater music, the style is also known as vaudeville blues.  Classic blues were performed by female singers accompanied by pianists or small jazz ensembles and were the first blues to be recorded.  Ma Rainey, Bessie Smith, Ethel Waters, and the other singers in this genre were instrumental in spreading the popularity of the blues. Louisiana blues is a genre of blues music that developed in the period after World War II in the state of Louisiana.  It is generally divided into two major subgenres, with the jazz-influenced New Orleans blues based on the musical traditions of that city and the slower tempo swamp blues incorporating influences from zydeco and Cajun music from around Baton Rouge.  Major artists in the New Orleans tradition include Professor Longhair and Guitar Slim and for swamp blues Slim Harpo and Lightnin' Slim.  Both genres peaked in popularity in the 1960s and were covered by a number of rock artists.  Interest declined in the later 1960s but there have been occasional revivals since the 1970s. Cocksucker Blues is an unreleased documentary film directed by the still photographer Robert Frank chronicling The Rolling Stones American Tour 1972 in support of their album "Exile on Main St." "Schoolboy Blues" is a 1970 song by The Rolling Stones, commonly recognised by the name "Cocksucker Blues".  It was written by Mick Jagger to be the Stones' final single for Decca Records as per their contract.  The song is a parody of Dr. John's "The Lonesome Guitar Strangler", released on his 1969 album "Babylon", however its context and language were chosen specifically to anger Decca executives and there are references to fellatio and anal sex in the lyrics.  The track was refused by Decca, although promotional 12" singles of it were pressed in the United States. Robert Lewis Jones (October 12, 1925 – April 2, 1996), known as both Guitar Gabriel and Nyles Jones, was an American blues musician.  Gabriel's unique style of guitar playing, which he referred to as "Toot Blues", combined Piedmont, Chicago, and Texas blues, as well as gospel, and was influenced by artists such as Blind Boy Fuller and Reverend Gary Davis.  After hearing of Guitar Gabriel from the late Greensboro, North Carolina blues guitarist and pianist, James "Guitar Slim" Stephens, musician and folklorist Tim Duffy located and befriended Gabriel, who was the inspiration for the creation of the Music Maker Relief Foundation.  Gabriel wore a trademark white sheepskin hat, which he acquired while traveling and performing with Medicine Shows during his late 20s. The following is an incomplete list of blues festivals, which encapsulates music festivals focused on blues.  This list may have some overlap with list of historic jazz festivals and list of historic rock festivals, both later genres dependent on elements of the blues.  The blues is a genre and musical form that originated in African-American communities in the "Deep South" of the United States around the end of the 19th century.  The genre is a fusion of traditional African music and European folk music, spirituals, work songs, field hollers, shouts and chants, and rhymed simple narrative ballads.  Blues has since evolved from unaccompanied vocal music and oral traditions of slaves into a wide variety of styles and subgenres, such as country blues, Delta and Piedmont, Chicago, West Coast blues.  World War II marked the transition from acoustic to electric blues and the progressive opening of blues music to a wider audience, especially white listeners.  In the 1960s and 1970s, a hybrid form called blues rock evolved, which was featured prominently in the Summer of Love, for example, and became ubiquitous at rock festivals. Mark Hummel (born December 15, 1955, New Haven, Connecticut) is a Grammy nominated Blues Music Award winning American blues harmonica player, vocalist, songwriter, and long-time bandleader of The Blues Survivors.  Since 1991, Hummel has produced the Blues Harmonica Blowout tour, of which he is also a featured performer.  The shows have featured blues harmonica players such as James Cotton, Carey Bell, and Charlie Musselwhite.  Although he is typically identified as performing West Coast blues, Hummel is also proficient in Delta blues, Chicago blues, swing and jazz styles. The Rough Guide to Blues Revival is a blues compilation album originally released in 2009.  Part of the World Music Network Rough Guides series, the album contains two discs: an overview of the contemporary scene on Disc One, primarily featuring American artists, and a "bonus" Disc Two highlighting Malian Samba Touré (a reference to the commonalities between the American Blues and West African music).  The compilation was produced by Phil Stanton, co-founder of the World Music Network.  Curation was performed by Nigel Williamson, a music journalist and author of the book "The Rough Guide to the Blues".  The term "blues revival" refers to the resurgence of the genre after the success of Stevie Ray Vaughan. Punk blues (or blues punk) is a fusion genre of punk rock and blues.  Punk blues musicians and bands usually incorporate elements of related styles, such as protopunk and blues rock.  Its origins lie strongly within the garage rock sound of the 1960s and 1970s. The Mark of the Maker is a 1991 American short documentary film about manual papermaking, produced by David McGowan.  It was nominated for an Academy Award for Best Documentary Short.
Answer: documentary