Complex sentence: The song briefly charted on the "Billboard" Hot 100 peaking at number 90, hitting number 27 on the R&B chart and reaching number 14 on the UK Singles chart.
Split into simpler sentences: The song briefly charted on the "Billboard" Hot 100 peaking at number 90, hitting number 27 on the R&B chart. Outside the US, "It's a Disco Night" reached number 14 on the UK Singles chart.