Multiple taxonomies

Please can someone help I’m totally confused. I need to list posts with multiple taxonomies ie.

List custom posts of ‘Therapists’, by taxonomies of ‘location’, and by ‘therapy’.

arrghh… Please help.

$args=array(
 'post_type' => 'therapist',
 'therapies' => 'acupressure',
 'location' => 'bristol',
 'post_status' => 'publish',
 );

$my_query = null;
$my_query = new WP_Query($args);
if( $my_query->have_posts() ) {
while ($my_query->have_posts()) : $my_query->the_post();

do something…