diff --git a/copyparty/u2idx.py b/copyparty/u2idx.py
index 1454ae86..a45f4ca6 100644
--- a/copyparty/u2idx.py
+++ b/copyparty/u2idx.py
@@ -1,10 +1,11 @@
 # coding: utf-8
 from __future__ import print_function, unicode_literals
 
+import re
 import os
 from datetime import datetime
 
-from .util import u8safe
+from .util import u8safe, html_escape, Pebkac
 from .up2k import up2k_wark_from_hashlist
 
 
@@ -73,17 +74,47 @@ class U2idx(object):
 
         uq, uv = _sqlize(qobj)
 
-        tq = ""
-        tv = []
         qobj = {}
         if "tags" in body:
             _conv_txt(qobj, body, "tags", "mt.v")
-            tq, tv = _sqlize(qobj)
 
-        return self.run_query(vols, uq, uv, tq, tv)
+        if "adv" in body:
+            _conv_adv(qobj, body, "adv")
 
-    def run_query(self, vols, uq, uv, tq, tv):
-        self.log("qs: {} {} ,  {} {}".format(uq, repr(uv), tq, repr(tv)))
+        return self.run_query(vols, uq, uv, qobj)
+
+    def run_query(self, vols, uq, uv, targs):
+        self.log("qs: {} {} ,  {}".format(uq, repr(uv), repr(targs)))
+
+        if not targs:
+            if not uq:
+                q = "select * from up"
+                v = ()
+            else:
+                q = "select * from up where " + uq
+                v = tuple(uv)
+        else:
+            q = "select up.* from up"
+            keycmp = "substr(up.w,1,16)"
+            where = []
+            v = []
+            ctr = 0
+            for tq, tv in sorted(targs.items()):
+                ctr += 1
+                tq = tq.split("\n")[0]
+                keycmp2 = "mt{}.w".format(ctr)
+                q += " inner join mt mt{} on {} = {}".format(ctr, keycmp, keycmp2)
+                keycmp = keycmp2
+                where.append(tq.replace("mt.", keycmp[:-1]))
+                v.append(tv)
+
+            if uq:
+                where.append(uq)
+                v.extend(uv)
+
+            q += " where " + (" and ".join(where))
+
+        self.log("q2: {} {}".format(q, repr(v)))
 
         ret = []
         lim = 1000
@@ -93,19 +124,6 @@ class U2idx(object):
             if not cur:
                 continue
 
-            if not tq:
-                if not uq:
-                    q = "select * from up"
-                    v = ()
-                else:
-                    q = "select * from up where " + uq
-                    v = tuple(uv)
-            else:
-                # naive assumption: tags first
-                q = "select up.* from up inner join mt on substr(up.w,1,16) = mt.w where {}"
-                q = q.format(" and ".join([tq, uq]) if uq else tq)
-                v = tuple(tv + uv)
-
             sret = []
             c = cur.execute(q, v)
             for hit in c:
@@ -190,6 +208,23 @@ def _conv_txt(q, body, k, sql):
         q[qk + "\n" + v] = u8safe(v)
 
 
+def _conv_adv(q, body, k):
+    ptn = re.compile(r"^(\.?[a-z]+) *(==?|!=|<=?|>=?) *(.*)$")
+
+    parts = body[k].split(" ")
+    parts = [x.strip() for x in parts if x.strip()]
+
+    for part in parts:
+        m = ptn.match(part)
+        if not m:
+            p = html_escape(part)
+            raise Pebkac(400, "invalid argument [" + p + "]")
+
+        k, op, v = m.groups()
+        qk = "mt.k = '{}' and mt.v {} ?".format(k, op)
+        q[qk + "\n" + v] = u8safe(v)
+
+
 def _sqlize(qobj):
     keys = []
     values = []
diff --git a/copyparty/web/browser.css b/copyparty/web/browser.css
index 6ef8c8ef..0eb7888d 100644
--- a/copyparty/web/browser.css
+++ b/copyparty/web/browser.css
@@ -422,6 +422,7 @@ input[type="checkbox"]:checked+label {
 }
 #srch_q {
 	white-space: pre;
+	color: #f80;
 }
 #files td div span {
 	color: #fff;
diff --git a/copyparty/web/browser.js b/copyparty/web/browser.js
index 6acba376..8544031a 100644
--- a/copyparty/web/browser.js
+++ b/copyparty/web/browser.js
@@ -588,10 +588,14 @@ function autoplay_blocked() {
 	];
 	var oldcfg = [];
 
-	if (document.querySelector('#srch_form.tags'))
+	if (document.querySelector('#srch_form.tags')) {
 		sconf.push(["tags",
 			["tags", "tags", "tags contains &nbsp; (^=start, end=$)", "46"]
 		]);
+		sconf.push(["adv.",
+			["adv", "adv", "key=5A&nbsp; .bpm>159&nbsp; .bpm<169", "46"]
+		]);
+	}
 
 	var html = [];
 	var orig_html = null;
@@ -654,9 +658,10 @@ function autoplay_blocked() {
 			return;
 
 		if (this.status !== 200) {
-			alert("http " + this.status + ": " + this.responseText);
+			ebi('srch_q').textContent = "http " + this.status + ": " + this.responseText;
 			return;
 		}
+		ebi('srch_q').textContent = '';
 
 		var res = JSON.parse(this.responseText),
 			tagord = res.tag_order;