[6] In 1968, he played guitar on Grant Smith & The Power's debut album, Keep On Running.
Among the musicians on the album were Wayne Stone, William "Smitty" Smith on keyboards and Steve Kennedy on saxophone.
[7] Leaving the band, the four of them relocated to London, Ontario, and formed the group Motherlode.
[9] When Motherlode broke up in December 1969, Marco, Steve Kennedy and Wayne Stone went on to be members of Dr. Music in Toronto, Ontario, Canada.
[14] In March 2015, Marco and Theresa Sokyrka were set to play a benefit concert for the Hope Cancer Centre.