Greatest Hits is a fine ten-track overview of the funk keyboardist's late-'70s/early-'80s recordings, containing all three of his Top Ten R&B hits ("Reach for It," "Dukey Stick," "Sweet Baby") plus a good selection of minor hits and album tracks.

This is where Miles Davis turned funk into jazz, rock into soul, and chaos into Beauty. With a rotating cast of bands featuring keyboardists Keith Jarrett and Chick Corea, guitarist John McLaughlin, percussionist Airto Moreira, saxophonists Gary Bartz and Wayne Shorter, and myriad other explorers, Davis kept up with the times…and surpassed them. He rocked harder than Sly, got funkier than J.B., and turned jazz inside out, slicing the music open till blood spilled on to the floor. More focused than Bitches Brew, which is all the more surprising since it's actually a piecemeal recording from various dates and venues–some in the studio, some on stage, but all very much l-i-v-e.

One of the dangers anytime an artist decides to forgo the organic approach and back his primary instrument with electronic effects is relying too much on the machinery. Fortunately, Ryo Kawasaki, as strong a producer as he is a lyrical electric guitar master, makes sure his silky urban rhythms on Sweet Life are simply an enhancement, rather than a burden, to his fluid lines. Whether the track is straight-out funk, smooth late-night seduction, or a loping ride like the title cut, his hypnotic synth lines simply set the mood. Kawasaki's plucky, winding way with a melody is textured over that, working its way toward varying degrees of emotional resonance. While the fully plugged-in mode carries the majority of the collection, Kawasaki earns his most memorable kudos for the simple and sparse acoustic gems, a lush cover of Janet Jackson's "Again" and on "Sweet Life," which improvises a flamenco-like edge over fingersnap percussion that sounds more real than machine-generated.

The best of all of Al Kooper's studio albums, Rekooperation is a mostly instrumental album, on which the artist (playing organ and piano, and occasional guitar) and a band including Jimmy Vivino, Harvey Brooks, and Fred Walcott, among others, roar and pound their way through a baker's dozen of R&B, rock & roll, and soul classics. Everything from chestnuts like "Soul Twist," "Honky Tonk," "Johnny B. Goode," "Clean Up Woman," and " "Don't Be Cruel" to originals such as "Downtime" and "Alvino Johnson's Shuffle," without a notable gap in quality between them, are included – and the one vocal number, "I Wanna Little Girl," contains one of the finest singing performances that Kooper has ever turned in on record (but is also played so well, that it would work as an instrumental too). In many ways, this recording is a distant cousin to Blood, Sweat & Tears' Child Is Father to the Man, and was his first attempt at leading a band since that 1968 venture, which was sort of fitting since it led to Soul of a Man, Kooper's live-in-concert career retrospective album, the next time out.

This reissue of a classic underground Paris Latin jazz/funk album is welcome to the hundreds who have sought it out at unbelievably high prices on the collector's market. Recorded in 1970 and issued by Barclay in 1971, Paris Soul is an album that wears the test of time well. The steaming orchestral arrangements by Evaristo Nata's steaming orchestral arrangements blends some Afro-Cuban flavors (such as the Santana tribute "Salute to Santa," on which they bite a chunk from "Oye Como Va" and bend it into a near salsa jam), some Brazilian samba, Memphis soul, and post-bop jazz soloing to achieve a smoky, sexy, funky groove. There are 120 tunes here, and all of them are deep, fat, and greasy with groove. The band members, apart from their arranger, are anonymous, but it hardly matters; this isn't the kind of record you're going to put on to analyze what's happening musically. While it's complex and beautiful, you'll be throwing this on either at home or the party in order to move on the dance floor.

Trombonist Julian Priester, after playing with many different groups, including those of Sun Ra, Lionel Hampton, Dinah Washington, Max Roach, and Duke Ellington, was a member of the Herbie Hancock Sextet during 1970-1973. Hancock's intriguing ensemble went from funk to free blowing, and in its later period was experimenting with synthesizers. On Love, Love, Priester continues in that vein. The two lengthy improvisations are mostly on one-chord repetitive rhythmic vamps stated by the bass, featuring sound explorations and plenty of electronics. Only on the last half of the second medley does Priester himself emerge a bit from the electronic sounds. One is reminded of Bitches Brew, since that is an obvious influence, but also Hancock's group and Weather Report. The music develops slowly, but listeners with patience will enjoy the blending of the many different voices in this unusual musical stew.

Possibilities is a Herbie Hancock adventure record. This ten-cut smorgasbord features the ever restless pianist, composer, and arranger in the company of literally dozens of artists, from pop singers like Christina Aguilera, Sting, and Annie Lennox to rock legends such as Santana and Paul Simon to relative newcomers like John Mayer, Jonny Lang, and Joss Stone, as well as some renowned international performers, such as Angélique Kidjo and Raul Midón in a wide range of songs, styles, and moods. Hancock cut the record in studios all over the world, all the collaborations were done face to face, not long distance. Session musicians here include everyone from Stevie Wonder (who plays the harmonica solo on the cover of his tune "I Just Called to Say I Love You"), to Santana to Cyro Baptista, Willie Weeks, John Pattitucci, Steven Jordan, and Gina Gershon (the actress)! The standout cuts are the sensual read of Leon Russell's "A Song for You," sung by Aguilera, Simon's jazzed-up revisioning of his "I Do It for Your Love," and Lennox's read of "Hush, Hush, Hush," written by Paula Cole (whatever happened to her?).

Though not as relentlessly funky as his classic Blue Note debut Two Headed Freap, On the Avenue remains the most accomplished record of Ronnie Foster's career, proving commercial aspirations and accoutrements can indeed co-exist alongside traditional jazz sensibilities. Produced by George Benson and featuring the great Phil Upchurch on guitar and Marvin Chapell on drums, On the Avenue favors more mellow, nuanced grooves over the blistering funk of previous Foster outings. The velvety opener "Serenade to a Rock" and the title cut both draw heavily on Stevie Wonder's classic mid-'70s recordings, with a lithe cover of the Innervisions track "Golden Lady" further underlining the influence. Foster also expands his palette to include Afro-Cuban sounds ("Big Farm Boy Goes to a Latin City") and even assumes vocal duties for the first time on LP with "To See a Smile." Best of all is his rendition of Freddie Hubbard's "First Light"; arguably Foster's purest and most potent performance to date.

Ray Charles was the musician most responsible for developing soul music. Singers like Sam Cooke and Jackie Wilson also did a great deal to pioneer the form, but Charles did even more to devise a new form of black pop by merging '50s R&B with gospel-powered vocals, adding plenty of flavor from contemporary jazz, blues, and (in the '60s) country. Then there was his singing; his style was among the most emotional and easily identifiable of any 20th century performer, up there with the likes of Elvis and Billie Holiday. He was also a superb keyboard player, arranger, and bandleader. The brilliance of his 1950s and '60s work, however, can't obscure the fact that he made few classic tracks after the mid-'60s, though he recorded often and performed until the year before his death.