Complex sentence: The sessions lasted until January 2007 and the results were twofold; an EP entitled "Oscillator" and its counterpart, the full-length release "Synthesizer" were both released in late 2007.
Split into simpler sentences: The sessions lasted until January 2007 and the results were twofold. An EP entitled "Oscillator" and its counterpart, the full-length release "Synthesizer" were both released in late 2007.