Artists like The Grass Roots

The Association is an American sunshine pop band from Los Angeles, California. During the late 1960s, the band had numerous hits at or near the top of the Billboard charts and were the opening act at 1967's Monterey Pop Festival. Generally consisting of six to eight members, they are known for intricate vocal harmonies by the band's multiple singers.

Three Dog Night is an American rock band formed in Los Angeles in 1967, founded by vocalists Chuck Negron, Cory Wells, and Danny Hutton. This lineup was soon augmented by Jimmy Greenspoon (keyboards), Joe Schermie, Michael Allsup (guitar), and Floyd Sneed (drums). The band had 21 Billboard Hot 100 top 40 hits between 1969 and 1975, with three hitting number one. Three Dog Night recorded many songs written by outside songwriters, and they helped to introduce mainstream audiences to writers such as Harry Nilsson ("One"), Randy Newman, Paul Williams, Laura Nyro and Hoyt Axton.

Tommy James and the Shondells is an American rock band formed in Niles, Michigan, in 1964. The band has had two No. 1 singles in the U.S.: "Hanky Panky" (1966), the band's only RIAA Certified Gold record, and "Crimson and Clover" (1968). The band also charted twelve other top 40 hits, including five in the Hot 100's Top 10: "I Think We're Alone Now" (1967), "Mirage" (1967), "Mony Mony" (1968), "Sweet Cherry Wine" (1969), and "Crystal Blue Persuasion" (1969).

Paul Revere & the Raiders were an American rock band formed in Boise, Idaho, in 1958. They saw considerable U.S. mainstream success in the second half of the 1960s and early 1970s. The band was known for including Revolutionary War-style clothes in their attire.

The Rascals are an American rock and blue-eyed soul band formed in Garfield, New Jersey, southeast of Paterson in 1965. The original lineup featured lead vocalist and keyboardist Felix Cavaliere, vocalist and percussionist Eddie Brigati, drummer Dino Danelli, and guitarist and vocalist Gene Cornish. Cavaliere and Brigati wrote the majority of the Rascals' original material.

Johnny Rivers is an American retired musician. He achieved commercial success and popularity throughout the 1960s and 1970s as a singer and guitarist, characterized as a versatile and influential artist. Rivers is best known for his 1960s output, having popularized the mid-1960s discotheque scene through his live rock and roll recordings at the Los Angeles nightclub Whisky a Go Go, and later shifting to a more orchestral, soul-oriented sound during the latter half of the decade. These developments were reflected by his most notable string of hit singles between 1964 and 1968, many of them covers. They include "Memphis", "Mountain of Love", "The Seventh Son", "Secret Agent Man", "Poor Side of Town", "Baby I Need Your Lovin'", and "Summer Rain". Rivers had a total of nine top-ten hits and 17 top-forty hits on the US charts from 1964 to 1977.

Hamilton, Joe Frank & Reynolds were a 1970s soft rock trio from Los Angeles. The original members were Dan Hamilton, Joe Frank Carollo (bass/vocal), and Tommy Reynolds (multi-instrumentalist/vocal), all of whom had previously played in The T-Bones, a 1960s band noted for the instrumental hit "No Matter What Shape ".

The Rascals are an American rock and blue-eyed soul band formed in Garfield, New Jersey, southeast of Paterson in 1965. The original lineup featured lead vocalist and keyboardist Felix Cavaliere, vocalist and percussionist Eddie Brigati, drummer Dino Danelli, and guitarist and vocalist Gene Cornish. Cavaliere and Brigati wrote the majority of the Rascals' original material.

Jay and the Americans are an American vocal group who were popular in the 1960s. Their initial line-up consisted of John "Jay" Traynor, Howard "Howie" Kane, Kenny Vance, and Sandy Deanne, though their greatest success on the charts in the United States and Canada came after Traynor left and once Jay Black and Marty Sanders joined the group; Black replaced Traynor as lead singer. They were inducted into the Vocal Group Hall of Fame in 2002.

The Four Seasons were an American rock band formed in 1960 in Newark, New Jersey. Since 1970, they have also been known at times as Frankie Valli and the Four Seasons. They are one of the best-selling musical groups of all time, having sold an estimated 100 million records worldwide.

Manfred Mann was an English-based rock band formed in London in 1962. They were named after their keyboardist Manfred Mann. The group had two lead vocalists: Paul Jones from 1962 to 1966 and Mike d'Abo from 1966 to 1969. Other members of various group line-ups were Mike Hugg, Mike Vickers, Dave Richmond, Tom McGuinness, Jack Bruce, Lyn Dobson, Henry Lowther and Klaus Voormann.

The Mamas & the Papas were an American-Canadian folk rock vocal group that recorded and performed from 1965 to 1968, with a brief reunion in 1971. The group was a defining force in the music scene of the counterculture of the 1960s. Formed in New York City, the group consisted of Americans John Phillips, Cass Elliot, and Michelle Phillips, and Canadian Denny Doherty. Its sound was based on vocal harmonies arranged by John Phillips – the songwriter and leader of the group – who adapted folk to the new beat style of the early 1960s.

The Youngbloods were an American rock band consisting of Jesse Colin Young, Jerry Corbitt, Lowell "Banana" Levinger, and Joe Bauer (drums). Despite receiving critical acclaim, they never achieved widespread popularity. Their only U.S. Top 40 entry was Chet Powers's "Get Together".

Lugee Alfredo Giovanni Sacco, known professionally by his stage name Lou Christie, was an American pop and soft rock singer-songwriter widely known for hits in the 1960s, including his 1966 U.S. chart-topper "Lightnin' Strikes" and 1969 UK number two hit "I'm Gonna Make You Mine".