diff --git a/CREDITS b/CREDITS
index e4fe8f22..1b30ba38 100644
--- a/CREDITS
+++ b/CREDITS
@@ -803,7 +803,7 @@ D: sprites: technospider reshading
 S: northivanastan
 N: Ivan Stanton
 E: northivanastan@gmail.com
-D: musics: d_e1m5
+D: musics: d_e1m5, d_e4m1, d_e4m8, d_e4m9
 
 S: MothraMaster
 D: sprites: Zombieman/Shotgunners boots update
@@ -965,6 +965,15 @@ E: owlgal69@protonmail.com
 W: https://owly.fans
 D: Freedoom website
 
+S: Matzu
+D: musics: d_e4m3
+
+S: ZeMystic
+D: musics: d_e4m6
+
+S: R0rque
+D: musics: d_e4m2
+
 S: rostuhan
 E: rostuhan123@gmail.com
-D: D_DM07 and D_DM13 music
+D: musics: d_dm07, d_dm13
diff --git a/buildcfg.txt b/buildcfg.txt
index 187d7fcd..aad2129a 100644
--- a/buildcfg.txt
+++ b/buildcfg.txt
@@ -478,6 +478,16 @@ D_E3M7
 D_E3M8
 D_E3M9
 
+D_E4M1
+D_E4M2
+D_E4M3
+D_E4M4
+D_E4M5
+D_E4M6
+D_E4M7
+D_E4M8
+D_E4M9
+
 D_BUNNY
 
 #else  /* #ifndef PHASE2 */
diff --git a/musics/d_e4m1.mid b/musics/d_e4m1.mid
new file mode 100644
index 00000000..6e377a7c
Binary files /dev/null and b/musics/d_e4m1.mid differ
diff --git a/musics/d_e4m2.mid b/musics/d_e4m2.mid
new file mode 100644
index 00000000..7df48752
Binary files /dev/null and b/musics/d_e4m2.mid differ
diff --git a/musics/d_e4m3.mid b/musics/d_e4m3.mid
new file mode 100644
index 00000000..40757b07
Binary files /dev/null and b/musics/d_e4m3.mid differ
diff --git a/musics/d_e4m4.mid b/musics/d_e4m4.mid
new file mode 100644
index 00000000..1a638338
Binary files /dev/null and b/musics/d_e4m4.mid differ
diff --git a/musics/d_e4m5.mid b/musics/d_e4m5.mid
new file mode 100644
index 00000000..9ec63221
Binary files /dev/null and b/musics/d_e4m5.mid differ
diff --git a/musics/d_e4m6.mid b/musics/d_e4m6.mid
new file mode 100644
index 00000000..0827f76a
Binary files /dev/null and b/musics/d_e4m6.mid differ
diff --git a/musics/d_e4m7.mid b/musics/d_e4m7.mid
new file mode 100644
index 00000000..fcec8267
Binary files /dev/null and b/musics/d_e4m7.mid differ
diff --git a/musics/d_e4m8.mid b/musics/d_e4m8.mid
new file mode 100644
index 00000000..b16a932b
Binary files /dev/null and b/musics/d_e4m8.mid differ
diff --git a/musics/d_e4m9.mid b/musics/d_e4m9.mid
new file mode 100644
index 00000000..e6c3991b
Binary files /dev/null and b/musics/d_e4m9.mid differ