Complex sentence: Two versions of the theme were used in the opening titles: that of the first run was more flute-oriented; meanwhile, the version used for the second was piano-based, aptly-named "Piano Parchment".
Split into simpler sentences: Two versions of the theme were used in the opening titles. The version used in the first run was more flute-oriented; meanwhile, the version used for the second was piano-based, aptly-named "Piano Parchment".