Yamaha Synth Book - US is a multimedia app developed by Yamaha Corporation of America. This free app offers a complete history of Yamaha Synthesizers, an integrated virtual analog software synth, a music remixer, and serves as a portal to Yamaha's online synth communities.

The app's Music Remixer allows users to combine and play audio phrases in real time. With a wide range of effects and mixer functions, it is perfect for both simple performances and more complex musical arrangements. The AN2015 feature offers virtual analog modeling similar to the AN1x synthesizer, with the added bonus of a drum part that keeps the beat going while you perform and control the main synth part.

Yamaha Synth History is a fascinating feature that provides detailed information about the design and development history of Yamaha synthesizers spanning over 45 years. This comprehensive account is a must-read for all synth enthusiasts, offering insight into the technological breakthroughs and innovations that have made Yamaha synthesizers so successful.

Lastly, the app's PORTALS feature provides links to Yamaha's online communities, allowing users to connect with other Yamaha Synth fans around the world. Whether it's through Facebook or Yamaha's own online synth community, yamahasynth.com, users can engage with like-minded individuals and share their passion for synthesizers.

With its wealth of features and resources, Yamaha Synth Book - US is a must-have app for any synth enthusiast or musician looking to explore the world of Yamaha synthesizers.