Title: Step by Step (Ayumi Hamasaki song)
Content:  "Step by step" was first mentioned in April 2015. Eventually, it was announced that the song would be used as the theme song for the NHK drama Bijo to Danshi, starring Yukie Nakama. The song was then released as a digital single on July 1, 2015.
Title: Step by Step (Ayumi Hamasaki song)
Content:  "Step by Step" (stylized as "Step by step") is a song by Japanese singer-songwriter Ayumi Hamasaki. It was released on July 1, 2015, as the digital lead single from her EP Sixxxxxx. The song was used as the theme song for the Yukie Nakama-starring NHK TV drama Bijo to Danshi. Although the song did not enter the Oricon Singles Chart, it did peak at number 21 on the Billboard Japan Hot 100 Chart.
Title: Step by Step (TV series)
Content:  The series' theme song "Second Time Around" was written and composed by Jesse Frederick and Bennett Salvay (both wrote the themes for other sitcoms produced by Miller-Boyett Productions such as Full House, Perfect Strangers, and Family Matters), and was performed by Frederick and Teresa James. The full 87-second version of it was only used during the first season. It was routinely edited over the following three seasons to allow additional time for scenes: the fourth verse was removed and the chorus was truncated in the second season edit, the kid chorus accompanying Jesse Frederick during the chorus' lyrics was removed in the version used during the third season, and the edit heard during most of the fourth 
Title: Step by Step (New Kids on the Block song)
Content:  "Step by Step" is a song by New Kids on the Block, released on May 10, 1990 as the first single from the album of the same name. It is the group's biggest-selling hit single. The lead vocals were sung by Jordan Knight. Danny Wood sang "Step 1", Donnie Wahlberg sang "Step 2", Jordan Knight sang "Step 3", Joey McIntyre sang "Step 4", and Jonathan Knight sang "Step 5". "Step by Step" was initially recorded by one of Maurice Starr's other groups, The Superiors. It was released as a single in 1987 on Motown Records but it was not successful. The New Kids cover of the song on 
Title: Step That Step
Content:  "Step That Step" is a song written by Mark Miller, and recorded by American country music group Sawyer Brown. It was released in January 1985 as the second single from their self-titled debut album. It was their first number-one hit on both the Billboard Hot Country Songs chart and the Canadian RPM country singles chart.
Title: Step by Step (Annie Lennox song)
Content:  "Step by Step" is a song by Whitney Houston, originally written and recorded by Annie Lennox. The song appeared on the B-side to Lennox's 1992 single "Precious". Whitney Houston released a reworked crossover R&B/pop cover version in 1996 on the album The Preacher's Wife. Houston's version replaces Lennox's verses with new lyrics and omits portions of the bridge. Annie Lennox provides backing vocals for Houston's rendition.
Title: Step and a Step
Content:  "Step and a Step" has lyrics written by Kentz, Yui Kimura, and Park Jin-young, with the latter also serving as the composer. Park Jin-young produced the track alongside Lee Hae-sol. A youthful and energetic pop song with an "addictive" rhythm, its lyrics convey "a warm message" that is intended to heal listeners during the COVID-19 pandemic, through lines like, "It's okay if you go slowly, step by step, at your own pace".
Title: Step by Step (New Kids on the Block song)
Content:  "Step by Step" was voted #4 in a Smash Hits poll of "Best Boyband songs...Ever" and also made the list of the top 30 Guilty Pleasures on About.com's music site. The song was voted #7 in a viewer poll of the greatest boy band/girl band songs on New Zealand show UChoose40. It was also voted #1 in a viewer poll of the greatest Guilty Pleasures on the same show. In August 2007, it was confirmed that "Step by Step" would be part of a 30-song track list in the new edition of the SingStar series titled SingStar 90s, a karaoke style game on classic '90s songs. Furthermore, it was chosen as part of a 32-track dance game in November 2009 for the Wii, called Just Dance. In January 2015, Heat magazine's TV Channel placed it at #17 in their "Greatest Boyband Anthems" countdown.
Title: Step (Vampire Weekend song)
Content:  The lyrics and other elements of "Step" were inspired by the song "Step to My Girl" which was recorded as a demo by the Oakland-based hip-hop group Souls of Mischief. The hip-hop group was contacted by Vampire Weekend's legal team to sample and use one of the lines from "Step to My Girl". One of the members of Vampire Weekend also spoke directly to Souls of Mischief about the song's sample. When Souls of Mischief member Tajai finally heard "Step" after it was completed, he expressed his approval stating that "it was so good; I was just happy we were able to be part of that." Impressed with the song's outcome, Souls of Mischief are contemplating on doing a collaboration with Vampire Weekend. The Souls of Mischief's song ,"Step to My Girl", samples Grover Washington Jr.'s saxophone cover of Bread's 1973 single, "Aubrey". This is why David Gates, founder of Bread and songwriter of "Aubrey", is credited as a songwriter of "Step".
Title: Step (Kara album)
Content:  On August 22, "Step" was announced by DSP Media as the lead single for the group's third full-length album, titled "Step", slated for release on September 6. The song was also included onto the limited edition of the group's second Japanese studio album, Super Girl. The Japanese version of the song was released on February 29, 2012 and is also included as a bonus track on the group's sixth Japanese single, "Speed Up / Girl's Power".

Question: who sang the theme song to step by step?
Answer: Jesse Frederick James Conaway.
Jesse Frederick.