Arash Yahyapour, also known as Arash Dimas, is an Iranian-Canadian musician, singer, composer, songwriter, photographer, self-help and self-development author, Reiki master, creativity coach, and certified life coach.

Born into a family that instilled in him a deep love for music, Arash's musical journey began at a young age when he learned the rhythm of Nagara, an Azerbaijani instrument, from his father. He later learned Tar, an Azerbaijani instrument, from Vahid and Reza Hosseini, further fuelling his passion for music. 
At 17, Arash discovered his talent for composing and realized he had a voice for opera. He wrote his early music on Tar and continued his musical education by receiving composition lessons from Mohammadreza Amirgasemi. After graduating in civil engineering, Arash pursued his music career by studying Musical Theatre and Opera and music composition at the Istanbul Conservatory; however, he decided to drop out of school and pursue his career as a musician by self-education and private lessons because of the discrimination he faced and the school's lack of a good education system. While living in Istanbul, he joined L&G, a musical band.
In 2011, Arash immigrated to Canada, where he participated in music projects as a singer, including the Operate of Arash composed by ICOT (Iranian Canadian composers). He also collaborated with the Tabriz ensemble as a lead male singer for the Arshin Malalan opera, composed by legendary Azerbaijani composer Uzeyir Hajibayov. Arash's perspective on music goes beyond technicality; he views it as a profound pathway to connect with diverse human experiences, promote healing, enhance emotional intelligence, and expand human consciousness. He believes music should be born from the realm of sensation and often improvises on the piano to create deeply personal and evocative music.
Arash has composed music in various genres, focusing on instrumental and piano pieces. He has arranged "Freedom," which he has done in multiple versions, including an orchestral arrangement. 
In 2013, he released his first instrumental album, Freedom, featuring his original compositions. Arash continues to create music in different genres and plans to have concerts featuring his compositions. 
Apart from his musical pursuits, Arash is deeply interested in universal consciousness, human consciousness, creativity, and self-healing. Through practices such as reiki therapy, chi gong, NLP therapy, self-hypnosis, meditation, and lifestyle changes, he has experienced personal healing and witnessed others overcoming life-threatening illnesses and healing physically and mentally. His curiosity about these topics encouraged him to write a book called " A Journey of Self-awareness and Self-discovery," released in October 2024 on BookBaby.com and available on all major digital platforms, such as Amazon, Kindle, Apple Books, Barnes & Noble, Indigo, Powell’s, Books-A-Million, the Ingram and Baker & Taylor and more… 

Arash's music reflects his life experiences, emotions, thoughts, imaginations and dreams. He believes music is a gift for humans and the shortest way to comprehend human experiences in different timelines and locations.