diff --git a/_includes/header.njk b/_includes/header.njk
index 851eb5d..e38571e 100644
--- a/_includes/header.njk
+++ b/_includes/header.njk
@@ -4,7 +4,7 @@
         <a id="headerSubtitle"><i>{{ subtitle or "Fanasy is not a crime, find your castle in the sky." }}</i></a>
     </div>
     <div id="linksHelper">
-        <div id="soundDiv" data-title="Stan LePard - Velkommen" data-source="welcome.mp3"></div>
+        <div id="soundDiv" data-title="tenkuma - Velkommen" data-source="Velkommen.mp3"></div>
         <ul id="headerLinks">
             <a href="/{{ langKey }}/">{{ i18n[langKey].home }}</a>
             <a href="/{{ langKey }}/blog/">blog</a>
diff --git a/docs/en/blog/index.html b/docs/en/blog/index.html
index 3980339..9206fe5 100644
--- a/docs/en/blog/index.html
+++ b/docs/en/blog/index.html
@@ -26,7 +26,7 @@
         <a id="headerSubtitle"><i>Fanasy is not a crime, find your castle in the sky.</i></a>
     </div>
     <div id="linksHelper">
-        <div id="soundDiv" data-title="Stan LePard - Velkommen" data-source="welcome.mp3"></div>
+        <div id="soundDiv" data-title="tenkuma - Velkommen" data-source="Velkommen.mp3"></div>
         <ul id="headerLinks">
             <a href="/en/">home</a>
             <a href="/en/blog/">blog</a>
diff --git a/docs/en/index.html b/docs/en/index.html
index b92c5e2..d097397 100644
--- a/docs/en/index.html
+++ b/docs/en/index.html
@@ -26,7 +26,7 @@
         <a id="headerSubtitle"><i>Fanasy is not a crime, find your castle in the sky.</i></a>
     </div>
     <div id="linksHelper">
-        <div id="soundDiv" data-title="Stan LePard - Velkommen" data-source="welcome.mp3"></div>
+        <div id="soundDiv" data-title="tenkuma - Velkommen" data-source="Velkommen.mp3"></div>
         <ul id="headerLinks">
             <a href="/en/">home</a>
             <a href="/en/blog/">blog</a>
diff --git a/docs/index.html b/docs/index.html
index 8938fed..d9bc6d8 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -26,7 +26,7 @@
         <a id="headerSubtitle"><i>Fanasy is not a crime, find your castle in the sky.</i></a>
     </div>
     <div id="linksHelper">
-        <div id="soundDiv" data-title="Stan LePard - Velkommen" data-source="welcome.mp3"></div>
+        <div id="soundDiv" data-title="tenkuma - Velkommen" data-source="Velkommen.mp3"></div>
         <ul id="headerLinks">
             <a href="/en/">home</a>
             <a href="/en/blog/">blog</a>
diff --git a/docs/posts/android-developer-verification/index.html b/docs/posts/android-developer-verification/index.html
index 304a9a7..1ea43c7 100644
--- a/docs/posts/android-developer-verification/index.html
+++ b/docs/posts/android-developer-verification/index.html
@@ -26,7 +26,7 @@
         <a id="headerSubtitle"><i>Fanasy is not a crime, find your castle in the sky.</i></a>
     </div>
     <div id="linksHelper">
-        <div id="soundDiv" data-title="Stan LePard - Velkommen" data-source="welcome.mp3"></div>
+        <div id="soundDiv" data-title="tenkuma - Velkommen" data-source="Velkommen.mp3"></div>
         <ul id="headerLinks">
             <a href="/en/">home</a>
             <a href="/en/blog/">blog</a>
diff --git a/docs/posts/telnet-en/index.html b/docs/posts/telnet-en/index.html
index ccb1dda..a75aa4f 100644
--- a/docs/posts/telnet-en/index.html
+++ b/docs/posts/telnet-en/index.html
@@ -26,7 +26,7 @@
         <a id="headerSubtitle"><i>Fanasy is not a crime, find your castle in the sky.</i></a>
     </div>
     <div id="linksHelper">
-        <div id="soundDiv" data-title="Stan LePard - Velkommen" data-source="welcome.mp3"></div>
+        <div id="soundDiv" data-title="tenkuma - Velkommen" data-source="Velkommen.mp3"></div>
         <ul id="headerLinks">
             <a href="/en/">home</a>
             <a href="/en/blog/">blog</a>
diff --git a/docs/posts/telnet-pt/index.html b/docs/posts/telnet-pt/index.html
index 6d2717b..b491014 100644
--- a/docs/posts/telnet-pt/index.html
+++ b/docs/posts/telnet-pt/index.html
@@ -26,7 +26,7 @@
         <a id="headerSubtitle"><i>Fanasy is not a crime, find your castle in the sky.</i></a>
     </div>
     <div id="linksHelper">
-        <div id="soundDiv" data-title="Stan LePard - Velkommen" data-source="welcome.mp3"></div>
+        <div id="soundDiv" data-title="tenkuma - Velkommen" data-source="Velkommen.mp3"></div>
         <ul id="headerLinks">
             <a href="/pt/">início</a>
             <a href="/pt/blog/">blog</a>
diff --git a/docs/posts/verificacao-de-desenvolvedor-no-android/index.html b/docs/posts/verificacao-de-desenvolvedor-no-android/index.html
index c3fb30a..7f824f4 100644
--- a/docs/posts/verificacao-de-desenvolvedor-no-android/index.html
+++ b/docs/posts/verificacao-de-desenvolvedor-no-android/index.html
@@ -26,7 +26,7 @@
         <a id="headerSubtitle"><i>Fanasy is not a crime, find your castle in the sky.</i></a>
     </div>
     <div id="linksHelper">
-        <div id="soundDiv" data-title="Stan LePard - Velkommen" data-source="welcome.mp3"></div>
+        <div id="soundDiv" data-title="tenkuma - Velkommen" data-source="Velkommen.mp3"></div>
         <ul id="headerLinks">
             <a href="/pt/">início</a>
             <a href="/pt/blog/">blog</a>
diff --git a/docs/pt/blog/index.html b/docs/pt/blog/index.html
index 43be0d5..3cd94a4 100644
--- a/docs/pt/blog/index.html
+++ b/docs/pt/blog/index.html
@@ -26,7 +26,7 @@
         <a id="headerSubtitle"><i>Fanasy is not a crime, find your castle in the sky.</i></a>
     </div>
     <div id="linksHelper">
-        <div id="soundDiv" data-title="Stan LePard - Velkommen" data-source="welcome.mp3"></div>
+        <div id="soundDiv" data-title="tenkuma - Velkommen" data-source="Velkommen.mp3"></div>
         <ul id="headerLinks">
             <a href="/pt/">início</a>
             <a href="/pt/blog/">blog</a>
diff --git a/docs/pt/index.html b/docs/pt/index.html
index adcad32..35dd92c 100644
--- a/docs/pt/index.html
+++ b/docs/pt/index.html
@@ -26,7 +26,7 @@
         <a id="headerSubtitle"><i>Fanasy is not a crime, find your castle in the sky.</i></a>
     </div>
     <div id="linksHelper">
-        <div id="soundDiv" data-title="Stan LePard - Velkommen" data-source="welcome.mp3"></div>
+        <div id="soundDiv" data-title="tenkuma - Velkommen" data-source="Velkommen.mp3"></div>
         <ul id="headerLinks">
             <a href="/pt/">início</a>
             <a href="/pt/blog/">blog</a>
diff --git a/docs/school/api-rodrigoribeiro/index.html b/docs/school/api-rodrigoribeiro/index.html
index 9093159..532ce99 100644
--- a/docs/school/api-rodrigoribeiro/index.html
+++ b/docs/school/api-rodrigoribeiro/index.html
@@ -26,7 +26,7 @@
         <a id="headerSubtitle"><i>Fanasy is not a crime, find your castle in the sky.</i></a>
     </div>
     <div id="linksHelper">
-        <div id="soundDiv" data-title="Stan LePard - Velkommen" data-source="welcome.mp3"></div>
+        <div id="soundDiv" data-title="tenkuma - Velkommen" data-source="Velkommen.mp3"></div>
         <ul id="headerLinks">
             <a href="/pt/">início</a>
             <a href="/pt/blog/">blog</a>
diff --git a/docs/school/guia-ifc-novatos/index.html b/docs/school/guia-ifc-novatos/index.html
index 420e9d6..e140283 100644
--- a/docs/school/guia-ifc-novatos/index.html
+++ b/docs/school/guia-ifc-novatos/index.html
@@ -26,7 +26,7 @@
         <a id="headerSubtitle"><i>Fanasy is not a crime, find your castle in the sky.</i></a>
     </div>
     <div id="linksHelper">
-        <div id="soundDiv" data-title="Stan LePard - Velkommen" data-source="welcome.mp3"></div>
+        <div id="soundDiv" data-title="tenkuma - Velkommen" data-source="Velkommen.mp3"></div>
         <ul id="headerLinks">
             <a href="/pt/">início</a>
             <a href="/pt/blog/">blog</a>
diff --git a/docs/static/Velkommen.mp3 b/docs/static/Velkommen.mp3
new file mode 100644
index 0000000..cfbf3f4
Binary files /dev/null and b/docs/static/Velkommen.mp3 differ
diff --git a/docs/static/scripts/main.js b/docs/static/scripts/main.js
index b4cc2b2..ed1dcd3 100644
--- a/docs/static/scripts/main.js
+++ b/docs/static/scripts/main.js
@@ -8,6 +8,7 @@ const savedTime = localStorage.getItem("audioTime");
 const wasPlaying = localStorage.getItem("audioPlaying") === 'true'
 
 if (savedTime) audio.currentTime = parseFloat(savedTime);
+
 if (wasPlaying) {
     play();
 } else {
@@ -15,6 +16,7 @@ if (wasPlaying) {
 }
 
 function play() {
+    audio.volume = 0.8;
     audio.play();
     localStorage.setItem("audioPlaying", "true")
     toggleIMG.src = "/static/images/sound-on.png"
diff --git a/static/Velkommen.mp3 b/static/Velkommen.mp3
new file mode 100644
index 0000000..cfbf3f4
Binary files /dev/null and b/static/Velkommen.mp3 differ
diff --git a/static/scripts/main.js b/static/scripts/main.js
index b4cc2b2..ed1dcd3 100644
--- a/static/scripts/main.js
+++ b/static/scripts/main.js
@@ -8,6 +8,7 @@ const savedTime = localStorage.getItem("audioTime");
 const wasPlaying = localStorage.getItem("audioPlaying") === 'true'
 
 if (savedTime) audio.currentTime = parseFloat(savedTime);
+
 if (wasPlaying) {
     play();
 } else {
@@ -15,6 +16,7 @@ if (wasPlaying) {
 }
 
 function play() {
+    audio.volume = 0.8;
     audio.play();
     localStorage.setItem("audioPlaying", "true")
     toggleIMG.src = "/static/images/sound-on.png"
diff --git a/static/welcome.mp3 b/static/welcome.mp3
deleted file mode 100644
index cbbbeb3..0000000
Binary files a/static/welcome.mp3 and /dev/null differ