Technological Innovations in Music - Prior to the 1870s, experiencing music was limited to being a singer/player, being near one, or using audiation [3] - From the 1920s onward, radio stations became a key tech innovation, with KDKA in Pittsburgh being the first commercial station [7] - Television emerged as a tech innovation from 1948 onward [8] - The invention of the transistor in the 1950s spurred portability and miniaturization in the music industry [15] Concerns and Future Trends - Early audio capturing/reproduction was seen as magic [5] - Concerns arose with new technologies, questioning if machinery would replace human interaction with music [12] - AI is anticipated to be the next major innovation, with potential for both positive and negative impacts [19] - Future music tech may involve holographic interfaces and chordless music [20] Evolution of Music Formats - 33 1/3 RPM records emerged in the 1940s [8] - 45 RPM singles also gained popularity [8] - Reel-to-reel tapes and 8-track tapes were significant formats [8] - Cassette tapes became widely adopted [8] - CDs emerged in 1986 [9] - Illegal platforms like Napster and later legal downloads/streaming services like Pandora changed music consumption [10]