<P> 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 . </P>
<P> 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 . </P>
who sang the eight is enough theme song
who sang the eight is enough theme song
Grant Goodeve
Grant Goodeve