A Spotify playlist from the psychedelic soul genre, containing about 500 tracks.

Wikipedia on the psychedelic soul genre:

"Psychedelic soul is a concept used to categorize music that features elements of psychedelic rock and soul/funk music. This kind of music thrived during the late 1960s and early 1970s. Psychedelic soul is often connected to artists such as Sly & the Family Stone and Funkadelic though the former's 1970s output is also often described simply as funk and the latter's music is often called funk-rock. However, they both took clear influences from psychedelic rock. Others, most notably The Temptations and their producer Norman Whitfield, War, The Undisputed Truth, and The 5th Dimension, followed the path laid out by the work of Sly Stone and his band. Psychedelic soul led the way for a harder, less subdued sound to permeate through black music, leading the way for the mainstream funk music of the early 1970s and later, disco. An important band in this regard is Funkadelic, led by George Clinton. Funkadelic mixed the soul and funk of the late 1960s and early 1970s with extended distorted guitar solos and psychedelic sound effects. Further, they coupled this sound with surreal imagery and stage antics, especially on early albums such as Funkadelic (1970), Free Your Mind...And Your Ass Will Follow (1970), and Maggot Brain (1971)."

A few sample tracks from the playlist:

• Prince & The Revolution - Kiss
• Curtis Mayfield - Move On Up - Extended LP Version
• Parliament - Give Up The Funk (Tear The Roof Off The Sucker)
• Sly & The Family Stone - Family Affair
• Prince & The Revolution - Raspberry Beret
• Marvin Gaye - What's Going On
• Parliament - Flash Light
• Prince - Sometimes It Snows In April
• Mother's Finest - Baby Love
• Marvin Gaye - Inner City Blues (Make Me Wanna Holler)
• Marvin Gaye - Mercy Mercy Me (The Ecology)
• Parliament - Do That Stuff
• Marvin Gaye - What's Happening Brother
• Curtis Mayfield - (Don't Worry) If There Is A Hell Below, We're All Going To Go
• Sly & The Family Stone - Dance To The Music
• Prince - Paisley Park
• The Chi-Lites - Have You Seen Her?
• Parliament - P Funk (Wants To Get Funked Up)
• Baby Huey & The Baby Sitters - Hard Times
• Curtis Mayfield - We The People Who Are Darker Than Blue - Live @ Bitter End, NYC
• The Temptations - Ball Of Confusion (That's What The World Is Today) - Greatest Hits Version (Stereo)
• Marvin Gaye - Flyin High (In The Friendly Sky)
• Marvin Gaye - Right On
• Marvin Gaye - God Is Love
• Marvin Gaye - Save The Children
• Sly & The Family Stone - Underdog
• Prince - Girls & Boys
• Curtis Mayfield - The Other Side Of Town
• The Chambers Brothers - Time Has Come Today
• Curtis Mayfield - The Makings Of You
• The Temptations - My Girl - Album Version (Stereo)
• Curtis Mayfield - Miss Black America
• Sly & The Family Stone - Stand!
• The Temptations - Papa Was A Rollin' Stone - Single Version
• Prince & The Revolution - Pop Life
• Marvin Gaye - I Heard It Through The Grapevine
• Curtis Mayfield - Wild And Free
• Curtis Mayfield - Ghetto Child - Demo Version
• Parliament - Mothership Connection (Star Child)
• Prince - Mountains