note about removing vocals:
this feature assumes vocals are recorded in mono.but anything in mono (or the centre channel) is extracted.this filter is usually optimised for male and female vocals,but instruments can disappear too.solo vocals are usually recorded in mono.but stereo reverb may be added-the remove vocals feature cannot remove the stereo reverb (or stereo echo).anything off centre (symbol on the left,or tambourine on the right for example) will remain.