Original sentence: In the US, the song reached number one on the adult contemporary chart, number two on the pop singles chart and disco chart and number four on the R&B chart.It was one of the most successful recordings in the "Philly Soul" sound, selling 28 million copies internationally
Edited sentence: It was one of the most successful recordings of the "Philly Soul" era, and in the US, the song reached number one on the adult contemporary chart, number two on the pop singles chart and disco chart and number four on the R&B chart