Combining two instruments together that means giving a birth to a new sound, new function in instruments usage, a new way to play an instrument, a new appearance. Also note scales for drums is like D3, A3, Bb3, C4, D4, E4, F4, A4 and the string note scales are designed in E-A-D-G-B-E system. The DrumString is light and does have a strap that's fastened over shoulders and waist therefore using and holding the instrument will be easy and it give s you the ability of using two hands.

Mohamad Montazeri was born in 1989, Iran. He got a Bachelor’s Degree and then a Master’s Degree in Industrial Design from ID Faculty of I. Art University of Tabriz/ Iran. Mohamad is also a musician, painter, Amateur Astronomer and promoter of astronomy. He is the Founder and CEO of Arena Design Studio and Arena Design Academy that designs product, service etc, and also promotes the design knowledge. He believes that a good design makes the world better. He defines a good design in the balance of emotional with its aesthetics, usability and functionality.

"Arena Design Studio" established in 2011 in Iran by Mohamad Montazeri. Our Primary focus is on products that people use them in daily life. We detect problems and find solution by designing a product and service and we mainly use sustainable materials besides of considering innovation, aesthetic and functional aspects of our designs.