Question: Were Ric Ocasek and Steve Marriott both songwriters?

Context articles: Steve Marriott: All Too Beautiful...
The Cars North American Tour Spring 2011
List of Humble Pie band members
This Side of Paradise (album)
Steve Marriott
Marriott (album)
Humble Pie (band)
Rock for Light
Emotion in Motion (song)
Ric Ocasek

Steve Marriott All Too Beautiful is the official biography of Steve Marriott, the singer, guitarist and frontman of the Small Faces (1965–1969) and Humble Pie (1969–1975).
The Cars North American Tour Spring 2011 is a set of eleven concerts in the United States and Canada featuring the newly reunited American band The Cars.
 Announced in April 2011 prior to the release of the band's album "Move Like This", the concerts feature material from "Move Like This" and from the band's 1970s and 1980s albums.
 Singer/guitarist Ric Ocasek, keyboardist Greg Hawkes, guitarist Elliot Easton and drummer David Robinson perform as a quartet; original Cars singer and bassist Benjamin Orr died in 2000.
 Orr's bass parts are performed by Hawkes on keyboard and bass; the vocals on songs originally sung by Orr ("Just What I Needed", "Let's Go" and "Moving in Stereo") are performed by Ocasek.
The following list details musicians who have been members of the English rock band Humble Pie.
 The original lineup consisted on Steve Marriott, Jerry Shirley, Greg Ridley and Peter Frampton.
 Frampton left the band in 1971 and was replaced by Clem Clempson who remained with them until the band broke up in 1975.
 Since 1975 there have been a number of reformations of the band including various original members and additional musicians.
 Between 1989 and 1999 original drummer Jerry Shirley obtained the rights to the band's name and began performing with new musicians, and Steve Marriott's blessing, as Humble Pie featuring Jerry Shirley.
This Side of Paradise is the second solo studio album released by Ric Ocasek, lead singer and songwriter of The Cars.
 It was released in 1986 by Geffen Records.
 Though it was a solo album, other members of The Cars played significant roles.
 Greg Hawkes plays keyboards and bass throughout the album (he appears on most of Ocasek's solo albums), and also co-wrote "Hello Darkness" (most Cars albums feature one Ocasek/Hawkes tune).
 Benjamin Orr is on backing vocals for three songs.
 Along with Hawkes and Orr, the track "True To You" also features Elliot Easton on guitar.
 Had drummer David Robinson been present, the song would have been an unofficial Cars reunion.
 Both production and drumming were by Chris Hughes (formerly known as "Merrick", drummer for Adam and the Ants).
 Hughes was the recent producer of Tears for Fears most popular two albums.
 Steve Stevens from Billy Idol's band plays guitar on over half the songs.
Stephen Peter Marriott (30 January 1947 – 20 April 1991) was an English musician, songwriter and frontman of two notable rock and roll bands, spanning over two decades.
 Marriott is remembered for his powerful singing voice which belied his small stature, and for his aggressive approach as a guitarist in mod rock bands Small Faces (1965–1969 and 1977-1978) and Humble Pie (1969–1975 and 1980–1981).
 Marriott was inducted posthumously into the Rock and Roll Hall of Fame in 2012 as a member of Small Faces.
Marriott is Steve Marriott's debut solo album from 1976 and features a British and an American side, reflecting the make-up of the bands backing Steve Marriott.
 The British side includes former Humble Pie colleague Greg Ridley on bass and singing backing vocals.
Humble Pie were an English rock band formed by Steve Marriott, in Essex during 1969.
 They are known as one of the late 1960s' first supergroups and found success on both sides of the Atlantic with such songs as "Black Coffee", "30 Days in the Hole", "I Don't Need No Doctor" and "Natural Born Bugie".
 The original band line-up featured lead vocalist and guitarist Steve Marriott from the Small Faces, vocalist and guitarist Peter Frampton from The Herd, former Spooky Tooth bassist Greg Ridley and a seventeen-year-old drummer, Jerry Shirley.
Rock for Light is the second full-length album by hardcore punk pioneers Bad Brains, released in 1983.
 A previous album, "Bad Brains", was released in 1982 but only on cassette, therefore making "Rock for Light" Bad Brains' first proper album.
 It was produced by Ric Ocasek of The Cars.
 The 1991 re-issue was remixed by Ocasek and bass player Darryl Jenifer.
 The re-issued version has some extra tracks, an altered track order, significantly different mixes and, on most tracks, a speed increase of the master which results in a raising of the pitch by one-half step.
"Emotion in Motion" is a song by Ric Ocasek, the main songwriter and lead vocalist for The Cars.
 It was featured on his second solo album, "This Side of Paradise", and released as a single in late 1986.
 The tune topped the Album Rock Tracks chart and reached number 15 on the "Billboard" Hot 100.
 It was Ocasek's only top 40 hit as a solo artist.
Richard Theodore Otcasek (born March 23, 1949), known as Ric Ocasek ( ), is an American singer, songwriter, musician and record producer.
 He is best known as the vocalist, rhythm guitarist and songwriter for the rock band the Cars.
 Ocasek has been married to model Paulina Porizkova since 1989.