There are at least two bands called TBC The first is a Hip-Hop Instrumental band from Chomutov, in Czech Republic. Mainly producer and Dj is Michael Klega, teen music talent.
The second is a group from the United Kingdom. A tour band for the Christian organization, innervation Trust, along with thebandwithnoname. Their website says this about the band:
"tbc are an all singing all dancing girl band who perform in venues across the country where their fun-packed performances have children and adults alike up on their feet and enjoying themselves.