<p>Sensorimotor integrative therapy (SMITh) is a Czech therapeutic approach used for the rehabilitation of children with developmental and communication problems. Its potential for children for special needs started to be explored by a series of research studies recently. This is the first case report investigating the effect of a musical modification of SMITh on speech production and development of a boy with speech delay. Data from technological measurements (speech production of the child, parent, and their conversation turns) collected by Language ENvironment Analysis (LENA Digital Language Processor, pre-test and post-test speech therapy examination, self-reported data from parents, and textual analysis of each session’s audio recordings has shown considerable progress of the boy in speech, attention, cooperation, and time perception. The results show potential of SMITh for the intervention in children with speech delay and other communication and developmental problems. Considering the limits of this case study, we recommend further investigation of SMITh and other sensory-based approaches in children with speech delay.</p>