I had the pleasure of seeing this group live recently supporting, of all people, Deep Purple. Their style is a fusion of Classical and Rock music, with a bit of folk as well. The most obvious comparison is with Bond, except there are eight people in The Planets and four of them are blokes. Also, whereas Bond are a string quartet, The Planets have a wider array of instruments, including guitars (electric and spanish), flute and oboe.
The best pieces in my opinion are the arrangements of classical pieces, a particular favourite being the Carmen Caprice, where the many themes of Bizet's Carmen are amalgamated into one piece (often with two themes playing on different instruments at the same time - surprisingly this works well).
Some of the original pieces such as Classical Graffiti, I find sprawl a bit although Journey of a Fool is thoughtful and extremely listenable.
Other favourites are the Bolero Fantasy and Rodrigo (a variation on his Guitar Concerto).
The only vocal piece is the old folk song "She Moves Through The Fair", sung competently by the bass player.
I hope that The Planets are as successful as Bond as their music is more diverse. This album is a good starting point