The main objective of this clinical study is to measure the effect of rhythmic auditory cueing, introduced in rehabilitation with three weekly sessions over a period of 7 weeks, on the frequency of rolling in idiopathic Parkinson's disease patients using pharyngography (swallowing radiography). The primary question of this study is: Does the rhythmic cueing introduced in rehabilitation significantly reduce the frequency of rolling in dysphagic Parkinson's patients? The researchers will assess the various stages of swallowing before, after, and 3 months after the rehabilitation protocol, focusing on the oral phase to determine if rhythmic auditory cueing reduces the frequency of rolling. Participants will be required to: * Perform three complete assessments (clinical speech therapy examination + pharyngography) before the protocol, after the protocol, and 3 months post-protocol. * Attend three times per week for 7 weeks at the La Musse hospital to participate in the protocol sessions under the supervision of a speech therapist.