Hindi Brooks, who soon became the show's long-time story editor. In-house directors included Philip Leacock, Harry Harris, and Irving J. Moore. As an in-joke, the character name of one of Nicholas Bradford's best friends was Irving Julius Moore, a nod to the director of the same name whose middle name was, in fact, Joseph. Music Theme For the show's first two seasons, an upbeat instrumental piece written by Fred Werner was used as the show's opening theme. Beginning with the show's third season, this was replaced by a slowed-down vocal theme titled "Eight Is Enough," which was sung by series co-star Grant Goodeve. The song had music by Lee Holdridge and lyrics by Molly-Ann Leikin, and was first heard in a longer arrangement on the last episode of the second season titled "Who's on First?", which was also performed by Goodeve. Score Early episodes had instrumental music by Fred Werner and Alexander Courage, but the show's real musical stamp came from composer Earle Hagen, who had a knack of composing memorable cues as he had previously been the in-house composer on The Andy Griffith Show. He composed a love theme for Tom and Abby, a theme that permeated the show in various incarnations throughout the remainder of the series. Some later episodes were scored by John Beal and Miles Goodman. Back-to-back industry strikes in the show's last seasons affected the show's score, with both the 1980 SAG actors' strike and 1981 writers' strike forcing cost-cutting measures. Some of the later episodes were tracked with a combination of uncredited library music and original music by Hagen, Beal, and Goodman. Reception and cancellation The series jump-started acting careers for several of its young stars. It cemented teen idol status for Grant Goodeve (David), Willie Aames (Tommy), and Ralph Macchio, who played Abby's orphaned nephew Jeremy later in the show's last season. Aames went on to star with Scott Baio in Charles in Charge. Goodeve started a minor singing career, following his rendition of the show's theme song (see Theme section) and initially hosted HGTV's If Walls Could Talk. Macchio gained the most fame in feature films such as The Karate Kid and its sequels, as well as My Cousin Vinny. After the end of the show's fifth season (112 one-hour episodes), production costs and declining ratings caused the show to be cancelled, along with seven other shows that season (including The Waltons).