The Juilliard String Quartet was one of the pioneering string quartet formations of the 20th century. Virtuosity in playing technique, sovereign creative power and precisely coordinated tonal balance with X-ray-quality intonation purity characterized the playing of the New York formation around founder and primarius Robert Mann. Indulging in tonal beauty was not their priority. In this way, they moved somewhat outside of what was customary in Central Europe at the time. Their complete recordings for the RCA label, for which they recorded in the short period from 1957 to 1960, appear for the first time bundled on 11 CDs.

This album celebrates a musical rapport that has lasted for twenty years and, above all, a true friendship: ‘We’re like two sisters, on stage and in life’, as Patricia Kopatchinskaja and Sol Gabetta like to say. In parallel with their dazzling solo careers, they have frequently got together for concerts in trio or double concerto formation (like the one written for them by Francisco Coll, recently released on ALPHA580). But they have conceived their new recording for a rather rare combination, the violin cello duo – with the aim of choosing pieces they found interesting either stylistically or for the way they use the instruments.

One thing buried amidst all Bon Jovi's detours of the new millennium – there wasn't just 2007's contemporary country Lost Highway, there was the acoustic reworking of hits This Left Feels Right in 2003 – is that the group has been sober-minded throughout the decade, reacting to 9/11 on 2002's Bounce, exploring the morass of W's America on 2005's Have a Nice Day, and now creating a soundtrack for the Great Recession on 2009's The Circle…

This Norwegian folk outfit started out in the early 70s mixing acoustic instruments (fiddle, mandolin, banjo and piano) with the electric guitar, bass and keyboards. They created an earthy music made up of playful, catchy melodies with male/female vocal interplay. Despite important personnel changes over the years (their first-rate lead female singer was replaced, among others), they have managed to remain true to their sound and have churned out over ten fine albums between 1974 and 1998. Their material is pure, often foot-stomping folk with Norwegian vocals. Despite the mostly minor keys, it is fresh and exhilirating and dons some wonderful arrangements.

Although somewhat overlooked in the jazz history books, vibraphonist Teddy Charles was for a period an important participant in the early Third Stream movement, using aspects of classical music to revitalize West Coast-style jazz. This CD reissue features trumpeter Shorty Rogers, tenor saxophonist Jimmy Giuffre, bassist Curtis Counce and drummer Shelly Manne on a couple of advanced originals (one apiece by Giuffre and Rogers) from 1953. After moving to New York, Charles teamed up for a short time with bassist Charles Mingus, performing six other numbers in a quartet with tenor saxophonist J.R. Monterose and drummer Gerry Segal. This session alternates cookers with sensitive ballads and is one of the better recorded showcases for Charles' vibes.

#9 Dream is the German duo of Helmut Zerlett and Walter Dahn from the label "Recycle or Die", known for groundbreaking music in the ambient/electronic field. Five rhythmic tracks are divided into two parts with a prelude, an interlude and a postlude. "Play Garden", "The Red of Fire" and "Summer Offering" are a bit catchier and rhythmic than the following long pieces "Letter in Three Parts" and "La Lune De Miel". As with earlier releases the soundscape is devoid of silly vocal samples and space synthesizer effects. The tracks are soft and in a curious way organic while the feel is very close to "Archaic Modulation" with the added spice of acoustic instruments.

In 2000, Koch reissued Don Covay's two classic mid-'60s albums, Mercy and See-Saw, on one tremendous CD. The term "classic" is thrown around haphazardly in pop music, but these are two sublime records that earn the term, even if they're not as roundly celebrated as platters from Otis Redding or even cult favorite James Carr. Though he racked up a number of singles on the R&B charts, he never had a huge crossover hit, but his music stands as some of the most effervescent, infectious soul of the '60s (not to mention that his vocal style was a clear inspiration to Mick Jagger). What makes his music so remarkable is how it's earthy Southern soul, kicking really hard in its rhythms and with plenty of growl in Covay's voice, but is as nimble, tuneful, and sunny as the sounds coming out of Chicago and Detroit during the mid-'60s. Perhaps that's why he never quite got a huge single – he straddled the two popular sounds without fully being part of either. It may have not resulted in big singles, but it resulted in splendid music. If there's not much difference stylistically between Mercy and See-Saw – they're both pretty much cut from the same cloth – there's also little difference in quality. It's all tremendous, enjoyable, sweet Southern soul. Razor & Tie's Mercy Mercy: The Definitive Don Covay provides the definitive overview, but for a pure concentration of Covay at his peak, this is irresistible and essential.

The second incarnation of Chick Corea's influential fusion group released only a single record, the magnificent Hymn of the Seventh Galaxy. Featuring a more rock-oriented approach than the Flora Purim-Joe Farrell band that was responsible for both Return to Forever and Light as a Feather, Corea and old standby Stanley Clarke join forces here with propulsive drummer Lenny White and electric guitarist Bill Connors…