Question: Which band whose co-founder was later a keyboardist for the Beach Boys, had a song which reached #13 on the "Billboard" Hot 100?

Context articles: Barbara Ann
Ron Altbach
List of cover versions of Beach Boys songs
The Man with All the Toys
Dancing in the Moonlight
The Beach Boys Medley
When I Grow Up (To Be a Man)
Wind Chimes (song)
New Colony Six
Fred Fassert

"Barbara Ann" is a song written by Fred Fassert that was first recorded by the Regents as "Barbara-Ann".
 Their version was released in 1961 and reached #13 on the "Billboard" Hot 100 chart.
 The most famous cover version was recorded in 1965 by the Beach Boys, issued as a single from their album "Beach Boys' Party!
" with the B-side "Girl Don't Tell Me".
Ronald S. "Ron" Altbach is a pianist and songwriter who co-founded French-American rock band King Harvest and played the Wurlitzer electric piano intro on their single "Dancing in the Moonlight" (1973).
 He later became a session keyboardist for the Beach Boys and penned songs for the group.
 Altbach was also a member of Celebration, a group led by Beach Boys co-founder Mike Love, mainly composed of Beach Boys touring musicians.
This is a list of cover versions of Beach Boys songs recorded by notable music artists.
 The Beach Boys were a critically and commercially successful band whose music is defined as being culturally significant.
 Through their immense influence, many notable artists began covering their original songs while various commemorative tribute albums have been created.
 Some of them feature song selections based on a certain era, particular album, or other thematic choice.
"The Man with All the Toys" is a Christmas song written by Brian Wilson and Mike Love for the American rock band The Beach Boys.
 It was released on their 1964 album "The Beach Boys' Christmas Album".
 As a single that year it had limited success (No. 6 on the "Billboard" Christmas chart), but built sales over successive Christmases and is listed by "Billboard" in the Top 100 selling Christmas songs in history, though well below the Beach Boys' 1963 Christmas single "Little Saint Nick".
"Dancing in the Moonlight" is a song by the French-American rock group King Harvest that was released as a single in 1972 and reached #13 on the "Billboard" Hot 100.
 The band released other singles, but they were never able to match the success of "Dancing in the Moonlight".
 The track was unique for using a Wurlitzer electric piano throughout.
 Decades after its original release, a cover by Toploader became a Platinum hit [selling over 600,000 copies].
"The Beach Boys Medley" is a single containing a medley of popular Beach Boys' songs from the 1960s, edited by John Palladino.
 Released in mid-1981, it capitalized on a medley craze begun by the Stars on 45 medleys.
 "The Beach Boys Medley" reached number 12 on the "Billboard" Hot 100, becoming the band's highest charting hit in the U.S. in over five years.
 The single peaked at number 8 on the Cash Box sales chart.
 "The Beach Boys Medley" was first released on an album a year later in 1982 on "Sunshine Dream".
"When I Grow Up (To Be a Man)" is a song written and composed by Brian Wilson with additional lyrics by Mike Love for the American rock band The Beach Boys.
 It was released on their 1965 album "The Beach Boys Today!
" and as a single the previous year hit number nine on the "Billboard" Hot 100 chart, number seven in "Cash Box", number five in "Variety" and number three in the Associated Press/Gilbert Youth chart.
 It spent two weeks at number one in Canada's national RPM chart.
 The B-side of the single was "She Knows Me Too Well" and stopped one place under the "Hot 100".
"Wind Chimes" is a song composed by Brian Wilson for the American rock band The Beach Boys.
 The original version of the song was written and recorded for the aborted 1966 album "Smile".
 The band completely re-recorded the song for inclusion on their next album, "Smiley Smile".
 That version was released on the b-side of "Wild Honey", their 1967 single which charted at #31 on the "Billboard" Hot 100 chart.
 Early versions and alternate mixes of the song were later released on the Beach Boys' box sets "" (1993) and The Smile Sessions (2011).
New Colony Six (sometimes abbreviated as NC6) is an American soft rock band whose height of popularity was from the mid-1960s to the early 1970s.
 From Chicago, the group placed ten singles on the Hot 100 between 1966 and 1971.
 Original members were Ray Graffia (vocals), who was born March 28, 1946, Chick James (drums), Pat McBride (harmonica), Craig Kemp (organ), Wally Kemp (bass), and Gerry Van Kollenburg (guitar), who was born June 26, 1946.
 Ronnie Rice (vocals, keyboards, guitar) replaced Craig Kemp as soon as Mr. Rice joined this group in 1966.
 There were numerous changes in the lineup over the years.
 The band's two biggest hits, which peaked on WLS months before they peaked nationally, were Rice's "I Will Always Think About You" (WLS #1 on 25 March 1968) (Hot 100 #22 on 1 June 1968) (#14 RPM Canada) and "Things I'd Like to Say" (WLS #2 on 30 December 1968) (Hot 100 #16 on 22–29 March 1969) (#6 Canada).
 In Canada they also hit the charts with an earlier song "Love You So Much" (WLS #2 on 27 January 1967) (Hot 100 #61 on 25 March 1967) (#49 Canada) and the later "I Could Never Lie To You" (WLS #7 on 26 May - 2 June 1969) (Hot 100 #50 on 14 June 1969) (#38 Canada).
Fred Fassert (born 1938) is most famously known as the writer of the popular song "Barbara Ann," which was originally written for the band that he was in at the time, The Regents.
 In 1961, the song reached #13 on the Billboard Hot 100 chart.
 It was covered by other artists, including the Beach Boys on their 1965 album, "Beach Boys' Party!"
, with the single reaching #2 on the Billboard chart.
 Fassert wrote "Barbara Ann" for his sister, Barbara Ann Fassert.
 His brother, Chuck Fassert, was the original 2nd tenor of the Regents.