Guy Klucevsek plays a Titano Royal Convertor Piano Accordion, designed and manufactured by Titano Accordion Corporation, Mineola, New York.

This is a "convertor-style" instrument: i.e., while the right hand side has a standard accordion keyboard, albeit extended to 45 keys (e-c), the bass button board (left-hand side) contains both a 120-bass Stradella (or standard) Bass system of bass notes and pre-set chords; and a 4-row, chromatic free bass system, consisting of all single tones, with a range of over 4-1/2 octaves. A convertor switch is used to go between one system and the other.

The free bass system makes it possible to play left-hand melodic lines over several octaves, open voicings, chords in any inversion, non-diatonic harmony and single-octave drones and bass lines; while the convertor system allows the performer to still have access to the Stradella Bass for standard accordion accompaniments which are invaluable for use in folk and world musics.