The hallmark of the band is a female vocal by Yana Veva – the lead vocalist and author of many songs.

Theodor Bastard's musicians use classical instruments: cello, harp as well as electronic instruments: synthesizers, samplers, theremin and ethnic instruments: nyckelharpa, jouhikko, darbuka, ashiko, conga, djembe, daf, didgeridoo, bağlama, gusli, cimbalom, dulcimer, caxixi, agogô, bawu, mbira, marimba, udu, reco-reco, ocarina, morin khuur, tibetan horn, kangling, cajón, jew's harp, spring drum and many other.

More members joined the band later, in 2000's, including vocalist and composer Yana Veva who also later participated in Shiva in Exile.

Theodor Bastard collaborated with many artists: Martin Atkins, Peter Christopherson,[15] Stefan Hertrich,[2] Fun-Da-Mental,[16] Julien Jacob and others.

Such artists from all over Europe as Riz Maslen, Animals on Wheels, Up, Bustle and Out, Robin Rimbaud, State of Bengal, Geomatic, Flint Glass and others took part in the work on the collection.

Fedor Svolotch also used the instruments that he had invented and made of improvised materials, such as coconuts, door springs, empty bottles, and plastic.

In the beginning of 2018 Theodor Bastard have finished the whole soundtrack for another awaited game – Life is Feudal: MMO, with 30 tracks, with many instruments including medieval and with vocal by Yana Veva.