Complex sentence: In November 2014, Marcel released his first RIAA Certified Gold single titled "2AM" which featured Sage the Gemini, the popular single preceded his second mixtape titled, "Weak After Next", which was released in July 2014.
Split into simpler sentences: In November 2014, Marcel released his first RIAA Certified Gold single, "2AM", featuring Sage the Gemini. His second mixtape, "Weak After Next", was released in July 2014.