Complex sentence: WAITIKI and their 20 + piece "Orchestrotica" started performing these transcriptions in 2005; the first time they have ever been heard live in some cases (Esquivel did not perform his big-band music live).
Split into simpler sentences: WAITIKI and their 20 + piece "Orchestrotica" started performing these transcriptions in 2005. These performances marked the first time Esquivel's big band arrangements have been heard live in some cases (Esquivel himself did not perform his big-band arrangements live).