This case study analyzed the therapeutic effects of the song-based music therapy approach towards the development of speech and language toward three children ages four to six years old with speech and language delays. Music therapy is an intervention that uses music and music-based activities to achieve non-musical therapeutic goals and objectives. The music therapy sessions used singing as a main medium in administering intervention to target the needs of each child towards their respective speech and language development to improve each participants quality of life. Structuring activities that revolved around interaction through singing, the therapist mainly used song-based activities through using a Fill-in-the-blank (FITB) format. Through improving their speech and language, their ability to socialize and communicate with the people in their environment is improved and increases the quality of their interpersonal interactions. Each participant attended a total of nine music therapy sessions that were all recorded through audio-visual platforms and written session reports. The findings in this study show that through using a song-based music therapy approach the possible benefits that children ages four to six with speech and language delay or impairments are: increased quantity of verbalization, improvement in non-verbal skills, and improvement in inferential thinking.