Dante confirmed that Melvin was a member of the Movin' Soothin' and Stone Funk Band, and was also a member of The Hamilton Movement. Also in the Hamilton Movement were King Solomon, James Matthews, Wayne Ewing Jr, and Johnny Davis.
I searched the Ohio Soul database, and came up with the following Melvin Brown discography:
Philmore Sound - Cincinnati /Hamilton
Movin' Soothin' & Stone Funk Band That's The Way Love Is/ Try A Little Tenderness R-30219
Movin' Soothin' & Stone Funk Band Cryin' For Your Love/ Dealin' With a Feelin 1973 R-30953/ 4
Melvin Brown & James Matthews Love Stormy Weather/ Soul Man 607121
Movin' Melvin Brown I Know/ I Was A Fool To Care 800130
Soul Sauce - Cincinnati
Movin' Soothin' Stone Funk Band You're All I Need/ You'll Have To Pay 0028
KB's Enterprises - Cincinnati
Melvin Brown Dance Man/ Feelings B-side by Towana D. Young 1978 QCA-803214
Here are the releases by the Hamilton Movement:
She's Gone/ We're Gonna Party (Look-Out 007) Indianapolis, IN label (1976)
Your Love (Brings Out The Best In Me)/ Having A Set (At The Disco) (Look-Out 008) (1976)
Love Man/ We're Gonna Party (Look-Out 009) (1977)
Send Me Some Love/ Love Circuit (Look-Out 521-16) with the Stonefunk Band (written by Melvin Brown and M Coleman)
Love Man (That's What I Long To Be)/ We're Gonna Party (Soundwaves 4547)
Dance Man/ Dance Man (Inst.) (Soundwaves 4588)
There is also a test pressing of an alternate take of Love Man to track down...
Special thanks to Dante Carfagna and all the teammembers of the Ohio Soul Recordings website, who compiled all the information presented here. Visit Indiana45s by Jeffery Kollath, which gives some details and scans of the Hamilton Movement singles. He's also written some interesting PhD articles, it seems, about the political and social aspects of Indiana soul ... Funk45.com had info on the members of the Hamilton Band.