There are a lot of bands out there performing cover tunes as well as there own material.  But very few attempt to do the tunes the Tonze cover.  For instance,

 

   Another thing you will here the Tonze Trio pull off are covering tunes by larger R&B bands such as Earth, Wind & Fire with only three guys and three vocal where as the original EWF has 9 or more members in it.  Of coarse it'll sound different then the original ones, but the cool thing about the Tonze is that they make it there own, so you don't even think twice about the lack of instrumentation cause they make up for it with there energy and groove factor.  You can reach the Tonze web sit at Tonze55.com or call or text : 360 440-0347