The DS10 is in fact the MS10 for the DS (the text)

as posted earlier but more clearly

Ds10
KORG DS-10

The KORG DS-10 is a music-creation software for the Nintendo DS that combines the superior interface of the Nintendo DS and the design concept of the famous MS-10 synthesizer.

The sound sources in the KORG DS-10 come from KORG – one of the world’s top musical instrument producers – and no effort was spared in creating these ultra-high-quality sounds. The Nintendo DS’s dual-screen touch panel is used to the fullest to provide a feel and operability that is unsurpassed, and combined with the sensory input mode at the touch-control screen, this unit can be appreciated by the complete novice as well as the seasoned professional.

In addition to the two analog synth simulators and drum module, a 6-track/16-step sequencer enables precise control and provides a wide range of musical possibilities. Several units can be connected and played together through a wireless link, and this and other features make the Nintendo DS and KORG DS-10 almost limitless in their application – they can take you places that no single synthesizer can.

The KORG DS-10 will introduce “stylus music? to the world at the International Musikmesse Frankfurt (Germany).

Description
– World’s first music tool software created for the Nintendo DS
– Two patchable dual-oscillator analog synth simulators:
– Four-part drum machine that uses sounds created with the analog synth simulator
– Six-track (analog synth x 2, drum machine x 4) /16-step sequencer
– Delay, chorus, and flanger sound effects available from the mixing board
– Three note-entry modes: touch-control screen, keyboard screen, matrix screen
– Real-time sound control mode via touch-control screen
– Exchange sounds and songs and play multiple units simultaneously through a wireless communications link
SpecificationsSpecifications    KORG DS-10
Release date    July 2008
Price    4,800 YEN (tax included)
Distributor    AQ Interactive, Inc.