Title: This Is It (Scotty McCreery song)
Content:  "This Is It" is a song co-written and recorded by American country music singer Scotty McCreery. It was released to digital retailers on March 9, 2018 and was released to radio on May 7, 2018. The song is the second single released from his fourth studio album Seasons Change (2018).
Title: This Is It (Ryan Adams song)
Content:  "This Is It" is a song by singer-songwriter Ryan Adams from his 2003 album Rock n Roll. The song was co-written with Johnny T. Yerington and released as a single in 2004. A music video for "This Is It", directed by Dominic J. DeJoseph, was produced in 2004. It features concert footage of Adams and his band performing the song. An acoustic version of the song was released as a b-side, while a mellower, re-recorded version with The Cardinals can be found on the 2007 EP Follow The Lights.
Title: This Is It and I Am It and You Are It and So Is That and He Is It and She Is It and It Is It and That Is That
Content:  This Is It and I Am It and You Are It and So Is That and He Is It and She Is It and It Is It and That Is That is the second album by Marnie Stern, released on October 7, 2008 on Kill Rock Stars. The album's title comes from an Alan Watts quote in his work On the Taboo Against Knowing Who You Are (1966), which was in turn a quotation from James Broughton's The Bard and the Harper (1965). Broughton also used the quote in his art film This Is It (1971). Pitchfork named This Is It... the 44th greatest album of 2008.
Title: If This Is It (Newton Faulkner song)
Content:  "If This Is It" is a song by English singer-songwriter and musician Newton Faulkner from his second studio album Rebuilt by Humans (2009). The song was released on September 11, 2009 as the album's lead single. The song was written by Adam Argyle, Newton Faulkner and produced by Mike Spencer. The song peaked to number 56 on the UK Singles Chart and number 29 on the Australian Singles Chart.
Title: This Is It (Jimmy Ibbotson album)
Content:  This Is It is the 1999 album by Jimmy Ibbotson.
Title: This Is It (Melba Moore song)
Content:  "This Is It" is a 1976 disco song written by Van McCoy, and performed by American singer and actress Melba Moore for her fifth album of the same name.
Title: This Is It (Michael Jackson song)
Content:  "This Is It" is a song co-written by American singer-songwriter Michael Jackson and Canadian singer-songwriter Paul Anka. The song was recorded by the former and featured as a track on the album This Is It (2009), which accompanies the 2009 concert documentary Michael Jackson's This Is It. It was premiered worldwide on Jackson's official website on October 12, 2009, four months after his death on June 25, 2009. Although Sony Music Entertainment referred to the song as a "new single" during its promotion, it was later confirmed that the song would only be sent for airplay, and not be available to buy as a single release. 
Title: This Is It! (The A&amp;M Years 1979–1989)
Content:  All songs written and arranged by Joe Jackson, except where noted.
Title: This Is It (Kenny Loggins song)
Content:  "This Is It" is a song by American musician Kenny Loggins. It was released in 1979 as the lead single from his 1979 album Keep the Fire. It reached number 11 on the Billboard Hot 100 and number 17 on the Adult Contemporary chart. "This Is It" was also successful on the Hot Soul Singles chart, reaching number 19; it was one of two entries on this chart. The song features additional vocals by Michael McDonald, who co-wrote the song with Loggins. The song won a Grammy Award in 1981 for Best Male Pop Vocal Performance. The song was featured as a theme song to the 1980 and 1981 NCAA Basketball Tournament Final Four on NBC SPORTS
Title: If This Is It (Huey Lewis and the News song)
Content:  "If This Is It" is a song by American rock band Huey Lewis and the News. It was released as the fourth single from their number-one album Sports in 1984, and became their fifth top-ten and third consecutive number-six hit on the Billboard Hot 100. It also reached number five on the Adult Contemporary chart, and then became their first UK hit single, reaching number 39 on the UK Singles Chart. The song is written in time signature.

Question: Who is the author of This Is It?
Answer: Joseph Connolly.