This document introduces various fields of music technology, including music information retrieval, new musical instrument design, robotic musicianship, and electronic music. It provides examples of using algorithms to detect musical patterns and automatically accompany songs. It discusses how new instruments can go beyond traditional forms using technology, citing the theremin as one early example. The document also notes how robotic musicianship allows human-computer interaction in music and how electronic music uses algorithmically synthesized sounds manipulated through coding, controllers, and sensors, sometimes to showcase technology itself.