Complex sentence: Other singles released were "Love Today", "Big Girl (You Are Beautiful)", "Happy Ending", and "Lollipop", which were all very successful and most managed to reach the top 10 in many music markets across the globe.
Split into simpler sentences: Other singles released were "Love Today", "Big Girl (You Are Beautiful)", "Happy Ending", and "Lollipop". Which were all successful and most managed to reach the top 10 in many music markets across the globe.