This is the only live recording of Focus at their peak (or at least the only one that is legally available, which is the same thing in Amazon terms) and, given that they were one of the greatest live bands of the 1970s, it's one that should adorn the cd rack of every serious music fan.
Dutch band Focus burst on to the music scene in 1971 with their second album 'Moving Waves'. The double album (remember those?) 'Focus 3' followed in 1972 and 'Focus at the Rainbow' (recorded in May 1973) came next. Featuring their definitive line-up (Thijs van Leer - keyboards and flute; Jan Akkerman - guitar; Bert Ruiter - bass; Pierre van der Linden - drums) it contains live interpretations of 6 of the tracks from the two earlier albums, plus a madcap reprise of the already completely bonkers 'Hocus Pocus'.
Focus used the studio versions of their songs as a starting point for their concerts and prided themselves on never performing the same show twice. This improvisational ability was one of the many things that measured the distance between them and their contemporaries and it is evident in every note on this album. Equally prominent are the band's two other landmark features: their technical virtuosity and their compositional brilliance. Drawing heavily on their European musical heritage (van Leer studied composition at the prestigious Amsterdam Conservatoire and Akkerman was to release an album of medieval lute music the following year) they proceeded to throw into the mix everything else that grabbed their fancy - jazz, rock, blues, avant-garde, you name it - with results that are frequently astonishing and often sublime.
Opening track 'Focus 3' is a dark, moody scene-setter - and surely the missing theme to some 1970s spy flick - with van Leer's haunting four note refrain pierced by sudden flashes of light as Akkerman's guitar streaks across it like lightning. It segues into 'Answers? Questions! Questions? Answers!', a piece of sustained improvisation that comes direct from some smoky underground jazz-blues dive on the wrong side of the Amsterdam tracks. 'Focus 2' (titles weren't always van Leer's strongpoint) contains one of their sweetest melodies to date and features more of Akkerman's signature 'violining' technique as the king of high-speed pyrotechnics shows that the space between the notes is often as important as the notes themselves. An excerpt from 'Eruption' follows (sadly only an excerpt as the track took up the whole of side two of the original 'Moving Waves' album) and this is perhaps the primes inter pares stand-out piece: a multi-movement classical structure (courtesy of van Leer), unbelievably tight playing from Ruiter and van der Linden in the rhythmn section and Akkerman's astonishing, sublime playing on the closing movement 'Tommy', which single-handedly justifies not only the invention of the electric guitar but quite possibly the creation of life itself. A helter-skelter, high speed version of 'Hocus Pocus' is next (complete with yodelled band introductions) in which all four show off like mad things before a slightly thin version of the then current Top 5 hit 'Sylvia', which misses the studio double tracking of Akkerman's guitar and which is perhaps the only one of their songs that didn't sound better played live. Another mad sprint through the single version of 'Hocus Pocus' and that's your lot.
In retrospect, 'Focus at the Rainbow' marked the high water point of the band. Everything that they set out to accomplish musically - classical themes developed into rock, improvisational mood swings, superb melodies and harmonising - is documented here. Two further albums were to come ('Hamburger Concerto' in 1974 and 'Mother Focus' in 1975) but the magic was seeping away. Drummer Pierre van der Linden quit in 1974 and in early 1976 Jan Akkerman walked out on the eve of yet another sell-out UK tour (see reviews of Focus at the BBC). And that really was your lot.
So buy this album if you remember Focus from their glory days but also buy this album even if you've never heard of them, because the stage was their metier and talent like this never really goes out of fashion. And for under a tenner you'll be getting something that you'll be listening to for the rest of your life.