pattern (binary, ternary), main beat pattern (fours...) etc., which both txalapartaris may agree on in advance of the performance. In addition, ready-made passages may be used embedded in a specific part of the playing, notably at the beginning and the ending. For example, the traditional opening phrase , meaning "the Cider Call", is frequently used and easily identifiable with only slight differences from some txalapartaris to others. A pre-established whole composition may be arranged as well, while that kind of playings are rare on bare performances with no accompanying instruments. Much of the success of the performance relies on the collusion between both players, so the more they are acquainted with each other's ways, tricks and likings (the flaws too!), the smoother the performance will go and the easier will be for the txalapartaris to show their aptitudes and excel in their playing. Beats There are two distinctive types of beats used on the traditional txalaparta: the and the . The former represents the balance (two beats of one of the players), while the latter names the person who tries other combinations that break it or twist it ( means limp). However, the person playing the regularity can nowadays become a balance-breaker, so triggering an argument between both sides of the performance that struggle to restore the balance. The basics of txalaparta is quite simple as regards the rhythm. Within a binary scheme the player's choice was originally to play two beats each with a different stick, a single beat or none. When no beat is played on the boards, it is called (rest), or it can be played once, and if the performer opts to strike all two possible beats, then it is , named after the two onomatopoeic sounds emitted. These choices apply currently to both players. Yet the binary pattern belongs to the traditional txalaparta (despite qualified remarks that point to a wider rhythmical range, see below), so when the instrument was carried from the couple of farmhouses it was confined to over to wider Basque cultural circles, the txalaparta evolved into more sophisticated rhythms and combinations, such as the ternary pattern. In that pattern, each player may use their own time lapse to play three even strikes on the boards (), or any other combination available, e.g. strike - rest - strike, strike - rest- rest, etc. (a sort of 6/8 time). As for the order