Self-taught soloist singing apprentice chiefly focused on English Renaissance music (i.e. 16th and 17th centuries). Keen on unaccompanied multi-tracked vocals. For more information visit my website: www.bass-tian.com/
What I do, in simple terms: I like to sing several times and put the voices together.
A bit more detail: Harmonising is generating different sounds at the same time. Self-harmonising involves just one person doing all the parts alone.
Even more loquacious: By accentuating timbric consistency and assembling a more genuinely natural blend, one-man choir artists have introduced a new(-ish) musical execution trend in the past sixty or so years, and it's swiftly expanding towards seemingly related areas such as composing, split-screen video post-processing and, last but certainly not least, the development of ancillary electronic equipment for that particular purpose (e.g. loop pedals, which are more or less in vogue right now and have been for a while this century).