[quote name='escholl' post='465492' date='Apr 17 2009, 08:27 PM']for some reason, i find it really easy to sing and play the guitar at the same time, but tough to sing and play the bass. go figure. [/quote]
Generally i find that bass lines do not follow the vocals lines at all in many cases. Your playing a longer instrument that requires more muscle to play. If you play with fingers its even worse, Its like your playing with 3 plectrums ie fingers.
As for me, I can perform growl vocals pretty well whilst playing, but couldnt do cleans unless I was playing very simple lines.