The bundle is built around a "Legacy Library" of over 70 instruments, which can be further enhanced with specific Expansion Packs (EPs). Notable instruments include: : Tabla, Dholak, Pakhawaj, Mridangam, and Ghatam.
Swar Systems has been a niche provider of Indian virtual instruments since the early 2000s. SwarPlug 4 (v4.5.0) represents a mature iteration, bundling 30+ instruments, a pattern-based sequencer, and real-time ornamentation (meend, gamak, kan-swar). The “WIN-VR” designation suggests Windows compatibility with potential VR visualization modes, though VR integration is limited to basic head-tracking in the standalone version. swar systems swarplug 4 bundle v4.5.0 win-vr