A routine is the execution of a series of skills to music. Swimmers execute both arm and leg movements within the routine. Lifts are also added to routines once swimmers have mastered the basics of synchronized swimming. Routines can be performed as a solo(1 swimmer), duet(2 swimmers), trio(3 swimmers), team(4-8 swimmers), or combo(4-10). Half of the routine score is from figures or tech routines. At a competition, the routine is performed in front of judges. The judges give a score from 1-10 in three categories: difficulty, artistic impression, and execution.