A string orchestra has only string instruments, i.e., violins, violas, cellos and double basses. Her music also often features violins, cellos, flutes, trumpets, clarinets and other instruments. Beltrami made use of a detuned piano with violins, violas, and cellos. George Martin arranged and added orchestral accompaniment that included violins, cellos, horns, and clarinet. Producer George Martin arranged and added orchestral accompaniment that included violins, cellos, horns, and clarinet. All-fifths tuning is typically used for mandolins, cellos, violas, and violins. It normally consists of first and second violins, violas, cellos, and double basses. Some bands include violins or even cellos. "Clockwork Angels" contains string arrangements composed of six violins and two cellos. One of his earliest studies was on the wolf tone in violins and cellos. Vibrating strings are the basis of string instruments such as guitars, cellos, and pianos. The electric cello has several advantages over acoustic cellos. The opening bars, with cellos, basses and bassoons, convey a new approach to timing. Live instruments such as guitars and cellos were then added. The cellos and basses play a pickup cadence to lead into most of the measures.