Complex sentence: At first, producer Misha Mansoor (from Periphery) programmed all the drums and synthesizers on the album; but then Tosin then decided on Javier Reyes and Navene Koperweis on rhythm guitar and drums, respectively.
Split into simpler sentences: At first, producer Misha Mansoor (from Periphery) programmed all the drums and synthesizers on the album. However, Abasi would soon enlist Javier Reyes and Navene Koperweis on rhythm guitar and drums, respectively.