In this picture from Nemo Studio from mid-80s is a Yamaha GS-1. This FM based piano was used on the Antarctica soundtrack.

In the following video Vangelis uses a Yamaha GS-1 at 1:19: https://www.youtube.com/watch?v=CRO8BT6o8Us&feature=youtu.be&t=79

Used on "Earth Beat", as specified in Herbie Hancock’s Electronic Instrument Glossary from September 14, 2016.

Yamaha GS-1 – Yamaha’s first digital polyphonic synthesizer, released in 1981, included features such as velocity sensitivity and three band equalizer. This was used by Herbie on the tune “Earth Beat” for his 1983 album Future Shock.

In both his pop and film music, Yamaha keyboards have been a recurring theme in Howard's musical life. As a young session player and producer, he helped demonstrate the capabilities of Yamaha synths such as the GS1 and DX7. "I've been involved with Yamaha since 1982," he says. "I used to perform at NAMM shows, and tour, and do all kinds of things on behalf of Yamaha keyboards, which I've always loved."

Interview (German) with Steve Porcaro: Ich habe das alles schon einmal mitgemacht, ich konnte meinen feuchten Keith-Emerson-Traum mit meinem Modularsystem auf der Bühne ausleben und habe von dem Polyfusion und all den anderen Synthesizern regen Gebrauch gemacht. Ich hatte fantastische Setups mit dem GS1, dem CS-80, Hammond-Orgeln und all diesen Geräten und jetzt bin ich einfach nur froh, nur noch hinter zwei Keyboards zu stehen.

The GS-1 with its distinctive shape can be seen in many shots of David's rig in this concert.

Minoru Mukaiya uses the GS-1 to play a brass sound in the intro, as well as an electric piano solo. It is also listed as being used by Mukaiya in several of Casiopea's early 80s studio albums, beginning with Eyes of the Mind in 1981.

"Q. I noticed that during your solo albums you moved through the gamut of classic 80s keyboards including the PPG Wave, Yamaha GS-1 and Roland D-50. What are your fave synths from the 80s?

I loved the GS-1. It was big and high quality but I don’t think I used it a lot on my solo albums. I think it was originally made for the small church market in America so that they could get the sounds they needed without buying a huge church organ. I had a deal with Yamaha who stuck with us over the years and when the GS-1 came out I ended up going to Hamburg and sitting with a Yamaha programmer who created some great string sounds for me. I loved playing that instrument and I could play the vibrato with my feet. I’d stand up and rock back back to keep the sustain going and do the vibrato with my foot.

I used the PPG a lot. I got into the Rack Mounted DX-7, the TX-816. I’d got into MIDI in the early days in my own studio for the first couple of solo albums, Transportation and Stand Up and Walk and linking all these things up to get new sounds. I had a Prophet T8, the Prophet Sampler, the Roland D-50. it was like Keyboard City. The Prophet VS was used a lot. I really liked the joystick and the way you could morph between sounds."

Brent Mydland was seen using a Yamaha GS-1 during the mid-1980s, as confirmed by Ryan Storm in his article "The Grateful Dead Keyboard Rigs - Yes, All of Them." This setup also included an Emulator II, with a Hammond B3 organ just out of frame to the left and one of the Leslies visible at the back left.

Kurt Ader, known for his work in sound design, utilizes the Yamaha GS-1 digital piano, as evidenced by his Facebook page.

The Yamaha PF15, GS1 and FX20 are mentioned in the liner notes to Crazy Bird.