Dynamic WooCommerce Checkout Custom Field - It will dynamic create field for each product in cart. It's great to use in specific selection for each product in cart

dynamic-woocommerce-checkout-field

add_action( 'woocommerce_before_order_notes', 'music_select' );

function music_select($checkout) {

	foreach ( WC()->cart->get_cart() as $cart_item_key => $cart_item ) {

			$product_id = $cart_item['product_id'];
			$product_name = $cart_item['data']->post->post_title;
			woocommerce_form_field( 'music_select_'.$product_id, array(
        	'type'          => 'select',
        	'class'         => array('my-field-class form-row-wide '.$product_id),
        	'label'         => __('Please select music for '.$product_name. ' video'),
        	'placeholder'   => __('Enter something'),
        	'options' 		=> array('track_1' => 'Track 1'),
        	),
        	$checkout->get_value( 'music_select' ));
}
}