2,500 quiet storm tracks from Spotify for all that mellow grooving.

Wikipedia defines the quiet storm genre as follows:

"Quiet storm is a late-night radio format, featuring soulful slow jams, pioneered in the mid-1970s by then-station-intern Melvin Lindsey at WHUR-FM, in Washington, D.C. Smokey Robinson's like-titled hit single, released in 1975 as the title track to his third solo album, lent its name to the format and to the radio program that introduced it to the public. Encompassing a mix of African American music genres, quiet storm music is distinguished by understated, mellow dynamics and relaxed tempos and rhythms. It can be soothingly pensive, or express romantic sentiment. Quiet storm music is similar to soft rock and adult contemporary styles, but it is more closely and unmistakably rooted in R&B and soul music, often with jazz extensions. At its best, the style features an urban sophistication and subdued soulfulness. Today, quiet storm is a broad term given to an array of mellow, slow-groove contemporary R&B, soul and smooth jazz offerings of the type featured on Melvin Lindsey's WHUR program, and on myriad other stations that followed his lead—most notably KBLX-FM in San Francisco, which in 1979 became the first radio station in the U.S. to present a 24-hour quiet storm format."

Here's a little peek at the playlist:

• Lionel Richie - Dancing On The Ceiling
• Prince - I Wanna Be Your Lover
• Earth, Wind & Fire with The Emotions - Boogie Wonderland
• Bobby Womack - Across 110th Street
• Chic - Le Freak
• Chaka Khan - Ain't Nobody
• Roberta Flack - Killing Me Softly With His Song
• Bobby Womack - California Dreamin'
• Marvin Gaye - Let's Get It On
• Lionel Richie - Easy - Extended Version
• Cheryl Lynn - Got To Be Real
• Earth, Wind & Fire - Fantasy
• Candi Staton - Young Hearts Run Free
• Sade - Smooth Operator - Single Version
• Sade - No Ordinary Love
• Sade - Your Love Is King
• Sade - The Sweetest Taboo
• Natalie Cole - This Will Be (An Everlasting Love)
• Tower Of Power - Soul With A Capital 'S' - Live
• Marvin Gaye - Stop Look Listen (To Your Heart)
• Chaka Khan - I Feel For You
• Prince - Sexy Dancer
• Sade - Hang On To Your Love
• Cameo - Word Up
• Roberta Flack - The First Time Ever I Saw Your Face
• Sade - Jezebel
• Marvin Gaye - You Are Everything
• Tower Of Power - Diggin' On James Brown - Live
• Billy Ocean - Get Outta My Dreams, Get Into My Car
• Commodores - Nightshift
• Rose Royce - Car Wash
• Sade - Is It A Crime
• Lionel Richie - Three Times A Lady