Complex sentence: This was the first time since their debut single "I Don't Want a Lover" in 1989 and may well have been helped by the fact that the main CD single contained both "I Don't Want a Lover" and two previous singles.
Split into simpler sentences: This was the first time since their debut single "I Don't Want a Lover". The main CD single contained both "I Don't Want a Lover" and two previous singles.