Complex sentence: The track was Al Martino's only UK number one hit; his subsequent releases failed to reach the top of the charts, and his final UK chart appearance was in 1973, when a reissue of "Spanish Eyes" reached the top five.
Split into simpler sentences: The track was Al Martino's only UK number one hit. His subsequent releases failed to reach the top of the charts, and his final UK chart appearance was in 1973, when a reissue of "Spanish Eyes" reached the top five.