late 1977, Grill decided to take a break from performing and later recorded the 14 Greats album on Gusto Records featuring Provisor and himself. This album consisted of 1978 rerecordings of their hits. The group, still managed and booked by Grill (who owned the group's name), in late 1977 continued touring with Larson, Mark Miller (lead vocals, guitar), and Brian Carlyss (bass, backing vocals), joined by Lonnie Price (lead vocals, keyboards) and Randy Ruff (organ, backing vocals) for touring dates and TV appearances until November 1978. Larson was then joined by new players Scott Hoyt (lead vocals, guitars), David Nagy (lead vocals, bass), and Gene Wall (keyboards). Nagy and Larson left in 1979, and were replaced by a returning Carlyss and Reagan McKinley (drums, percussion). During this period, the group appeared on an HBO television special, '60s Rock Scrapbook, filmed at Magic Mountain amusement park in Valencia, California, in October 1979, with Grill and Dennis Provisor making special appearances. Grill launched a solo career in 1979 (assisted on his solo album, Uprooted, by Lindsey Buckingham, Mick Fleetwood, and John McVie of Fleetwood Mac on the song "Rock Sugar"). Grill toured as a solo act in 1979–1980 opening for Fleetwood Mac's Tusk tour with a band led by guitarist Rick Alexander. When interest in bands of the 1960s began to rise again in 1980, Grill (along with Provisor, Shulfer, and new players Steve Berendt (bass) and Luke Meurett (drums) took back the Grass Roots name and toured the United States and Japan. Guitarist Miller returned to substitute dome more dates with the group in 1981. 1982 to 1993 In 1982, Grill decided to go forward with a brand-new lineup consisting of seasoned session players. They were Terry Oubre (guitars, backing vocals), Charles Judge (keyboards, synthesizers, backing vocals), and Ralph Gilmore (drums, percussion, backing vocals). Another keyboardist, Bob Luna, came in around mid-1982 to subtitute for Judge on dates when he was not available. That same year, the new band released Powers of the Night on MCA. This was the last album of new material to be released by the Grass Roots to date. Later in 1982, the Grass Roots performed an Independence Day concert on the National Mall in Washington, DC, attracting a large crowd and setting a record for attendance (over half a million people), at that time, for an outdoor concert for a single musical act. In April 1983,