Question: Radio Iodine and No Doubt are both bands in what music genre?

Context paragraphs:
Laïko: Laïkó (Greek: λαϊκό τραγούδι , ] , "song of the people"; "popular song", pl: "laïká" ["tragoudia"]), is a Greek music genre composed in Greek language in accordance with the tradition of the Greek people.  Also called "folk song" or "urban folk music" (Gr: αστική λαϊκή μουσική or λαϊκά τραγούδια "laïká tragoudia"), in its plural form is a Greek music genre which has taken many forms over the years.  Laïkó followed after the commercialization of rebetiko music.  It was strong dominated by Greek folk music and is used to describe the whole of the Greek popular music.  When used in context it refers mostly to the form it took in the period from the 1950s to the 1980s.

Chalga: Chalga is a Bulgarian music genre, often referred to as pop-folk, short for "popular folk".  Chalga or pop-folk is essentially a folk-inspired dance music genre, with a blend of Bulgarian music (Bulgarian ethno-pop genre) and also primary influences from Greek, Turkish, Arabic, Romani, Albanian and Russian music.

Songwriter: A songwriter is a professional who is paid to write lyrics and melodies for songs, typically for a popular music genre such as rock or country music.  A songwriter can also be called a composer, although the latter term tends to be used mainly for individuals from the classical music genre.  The pressure from the music industry to produce popular hits means that songwriting is often an activity for which the tasks are distributed between a number of people.  For example, a songwriter who excels at writing lyrics might be paired with a songwriter with the task of creating original melodies.  Pop songs may be written by group members from the band or by staff writers – songwriters directly employed by music publishers.  Some songwriters serve as their own music publishers, while others have outside publishers.

Radio Iodine: Radio Iodine was an alternative rock band from St. Louis, Missouri.  It was formed in 1993 as 9 Days Wonder by Tony Persyn and his wife, Ellen.  After another band threatened to sue over the name, the band changed its name to Radio Iodine.  It signed to Radioactive Records, which released a self-titled EP in 1996.  Radioactive Records chairman Gary Kurfirst moved the band to his new subsidiary label Radiouniverse, and the band's 1997 album "Tiny Warnings" was the label's inaugural release.

Beat music: Beat music, British beat, or Merseybeat (after bands from Liverpool and nearby areas beside the River Mersey) is a pop and rock music genre that developed in the United Kingdom in the early 1960s.  Beat music is a fusion of rock and roll (mainly Chuck Berry guitar style and the midtempo beat of artists like Buddy Holly), doo-wop, skiffle and R&B.  The genre provided many of the bands responsible for the British Invasion of the American pop charts starting in 1964, and provided the model for many important developments in pop and rock music, including the format of the rock group around lead, rhythm and bass guitars with drums.

Kadongo Kamu: Kadongo Kamu is a music genre native to Uganda and is the oldest mainstream music genre in the country.  The word "kadongo kamu" is a term in the Ganda language that means "one little guitar".  To understand why the genre has this name, one has to understand the stylistic structure of the music which is created with only one acoustic guitar, a dry acoustic non-electric six-string guitar.  But this is not always the case and many times other instruments are involved.  However the true style of the music relies only on one acoustic guitar as instrumentation, hence the "one little guitar" name.

No Doubt: No Doubt is an American rock band from Anaheim, California, that formed in 1986.  Since 1994, the group has consisted of vocalist Gwen Stefani, bassist and keyboardist Tony Kanal, guitarist and keyboardist Tom Dumont, and drummer Adrian Young.  Since the mid-1990s in live performances and the studio, they have been supported by keyboardist and trombonist Gabrial McNair and keyboardist and trumpeter Stephen Bradley.

Fantezi: Fantezi, is a Turkish music genre composed in Turkish language in accordance with the tradition of the Turkish people.  Also called folk song or urban folk music , in its plural form is a Turkish music genre which has taken many forms over the years.  Fantezi followed after the commercialization of Turkish classical music and Kanto music.  It was strong dominated by Turkish folk music.  When used in context it refers mostly to the form it took in the period from the 1920s to the 1980s. It is a vocal works emerged in 20th century, in free style, and usually having several part, each part composed in different tempo or method.

Folk rock: Folk rock is a music genre combining elements of folk music and rock music.  In its earliest and narrowest sense, the term referred to a genre that arose in the United States and the United Kingdom around the mid-1960s.  The genre emerged from bands such as the Beatles, the Searchers, and the Animals in the UK, and Bob Dylan and the Byrds in the US, who played traditional folk music and songs with rock instrumentation.  The term "folk rock" is first noted as being used by the U.S. music press in June 1965 to describe the Byrds' music; the band's debut album was released the same month.

Iodine Recordings: Iodine Recordings was an independent record label based in Boston, Massachusetts, United States.  Iodine Recordings released punk, hardcore, and indie rock music.  It was once home to bands such as Brand New, Orange Island, Smoke or Fire (Jericho RVA), There Were Wires, Gregor Samsa, and more.

Supporting paragraphs: Radio Iodine No Doubt
Answer: rock