Title: Signal (Twice song)
Content:  "Signal" was written by Park Jin-young and co-composed by Park and Kairos. This marked Twice's first collaboration with their agency's founder. The electropop song features a programmed Roland TR-808-style kick and hi-hat with incorporating hip hop elements. Lyrically, it expresses a girl's frustration who keeps sending "signs and signal" to hint her feelings for a guy but is unnoticed.
Title: Signal (EP)
Content:  Signal is an EP consisting of six songs incorporating various genres such as pop dance, hip hop, moombahton, and jazz, among others. The eponymous title track was written and produced by Park Jin-young, which featured the usage of a Roland TR-808-style kick alongside elements from hip hop and pop dance. Lyrically, it expresses a girl's frustration who keeps sending "signs and signal" to hint her feelings for a guy but is unnoticed. The second track "Three Times A Day" is an up-tempo track that lyrically portrays the feelings and thoughts of a girl who has grown frustrated due to the indifference of her boyfriend, and sonically features moombahton and reggaetón stylings. "Only You" is a song written by former Wonder Girls member 
Title: Signal (band)
Content:  Signal (Сигнал) is a Bulgarian rock band, most popular in the 1980s and 1990s.
Title: Signal (Twice song)
Content:  "Signal" (stylized in all caps) is a song recorded by South Korean girl group Twice. The song was released on May 15, 2017, by JYP Entertainment and distributed by KT Music, as the lead single from their fourth extended play of the same name. The Japanese version of "Signal", along with its accompanying short version of the music video, was released on June 14, 2017, as a promotional single for their first Japanese compilation album, #Twice. The song received its first awards, Song of the Year (grand prize) and Best Dance Performance for a female group, at the 2017 Mnet Asian Music Awards.
Title: Signal (KAT-TUN song)
Content:  "Signal" is a song written by Ma-saya, Joker, Joey Carbone, Lisa Huang and Akira for the second single and second studio album of the Japanese boy band, KAT-TUN. It was released on July 19, 2006 in Japan, and became the group's second consecutive number one single on the Oricon daily and weekly singles charts.
Title: Signal (EP)
Content:  Signal (stylized as SIGNAL) is the fourth extended play (EP) by South Korean girl group Twice. The EP was released on May 15, 2017, by JYP Entertainment and distributed by Genie Music. Featuring six tracks incorporating various genres such as pop dance, hip hop, moombahton, and jazz, the EP is supported by the lead single of the same name produced by Park Jin-young, which features the use of a programmed Roland TR-808-style kick and hi-hat. This marks the first time that Twice and Park had collaborated with one another for a song. Several notable producers and songwriters participated in the production of the album, including Twice's members Jihyo and Chaeyoung who wrote the lyrics for the fifth track "Eye Eye Eyes", while the third track "Only You" has lyrics written by former Wonder Girls member Ha:tfelt. The EP became a commercial success for the group, reaching over 280,000 copies sold by the end of 2017. With its release, Twice reached an accumulated number of over 1 million albums sold since their debut.
Title: The Signal (Sandra Nasić album)
Content:  The Signal is the debut solo album by German singer Sandra Nasić, lead vocalist of the alternative rock band Guano Apes. Released in 2007, it peaked at No. 46 on the German charts. The songs on the album are mainly alternative rock, though they also contain pop and electronic elements.
Title: Signal (Kanon Wakeshima song)
Content:  "Signal" is the fourth single released by Japanese singer and cellist Kanon Wakeshima, and second single from her album, Tsukinami. The song "Signal" was used as the ending of the anime television series Strike the Blood. The song reached number 54 on the Oricon Singles Chart and stayed on the chart for two weeks.
Title: Signal (South Korean TV series)
Content:  Signal is a 2016 South Korean fantasy police procedural television series starring Lee Je-hoon, Kim Hye-soo and Cho Jin-woong. Based on the 2000 film Frequency in premise and inspired by real-life criminal incidents in Korea, including the Hwaseong serial murders, the series aired on tvN from January 22 to March 12, 2016 on Fridays and Saturdays at 20:30 KST for 16 episodes. The series received widespread acclaim from audience and critics alike for its story and performances. It is also the fourteenth highest-rated Korean drama in cable television history with a peak audience viewership of 12.544%.
Title: Signal (Twice song)
Content:  On February 24, 2017, Twice officially announced that their debut in Japan was set for June 28. They released a compilation album titled #Twice which consists of ten songs including both Korean and Japanese-language versions of "Signal". The Japanese lyrics were written by Yu Shimoji and Samuelle Soung. "Signal (Japanese ver.)", along with its accompanying short version of the music video, was pre-released on June 14 as a promotional single of the album.

Question: What genre is Signal?
Answer: rock music.
rock and roll.
rock.
Rock.