diff --git a/src/ctdo.js b/src/ctdo.js
index a466dfb..fd2a95f 100644
--- a/src/ctdo.js
+++ b/src/ctdo.js
@@ -45,10 +45,10 @@ module.exports = function(robot) {
   // topic
   robot.adapter.bot.addListener('topic', function(channel, topic) {
     robot.brain.data.topics[channel] = topic
-    setTopic(topic);
+    setTopic(channel, topic);
   });
 
-  function setTopic(currentTopic) {
+  function setTopic(channel, currentTopic) {
     robot.http("https://status.ctdo.de/api/simple/v2")
     .header('Accept', 'application/json')
     .get()(function(err, res, body) {
@@ -76,14 +76,18 @@ module.exports = function(robot) {
         }
       }
       if(newTopic !== currentTopic) {
-        robot.brain.data.topics[process.env['HUBOT_IRC_ROOMS']] = newTopic;
-        robot.adapter.topic({room: process.env['HUBOT_IRC_ROOMS']}, newTopic);
+        robot.brain.data.topics[channel] = newTopic;
+        robot.adapter.topic({room: channel}, newTopic);
       }
     })
   }
   // topic interval
   setInterval(function() {
-    setTopic(robot.brain.data.topics[process.env['HUBOT_IRC_ROOMS']]);
+    var channels = process.env['HUBOT_IRC_ROOMS'];
+    channels = channels.split(',');
+    channels.forEach(function(c) {
+      setTopic(robot.brain.data.topics[c]);
+    }
   }, 5000);
   // gem
   var gem = false;
@@ -113,4 +117,21 @@ module.exports = function(robot) {
       r.reply("Ich erkenne niemanden im Treff.");
     })
   });
+  // disco
+  var discoInterval;
+    function disco() {
+        setLampel(Math.random() >= 0.5, Math.random() >= 0.5, Math.random() >= 0.5);
+    }
+    robot.respond(/(disco|disco ([0-9]{1,3}))$/i, function(r) {
+      if(typeof(discoInterval) !== 'undefined') {
+        clearInterval(discoInterval); // hebt den interval auf.
+        return discoInterval = undefined;
+      }
+      if(r.match.length === 2) {
+        console.log(parseInt(r.match[1]));
+        setInterval(disco, r.match[1]);
+      } else {
+        setInterval(disco, 500); // 120bpm!
+      }
+    });
 }