Complex sentence: In July 2012, after releasing two prior mixtapes, Haze released their mixtape "Reservation" online for free, its lead single "New York" peaked at number 58 on the UK Singles Chart, and number 12 on the UK R&B Singles Chart.
Split into simpler sentences: In July 2012, after releasing two prior mixtapes, Haze released their mixtape "Reservation" online for free. Its lead single "New York" peaked at number 58 on the UK Singles Chart, and number 12 on the UK R&B Singles Chart.