diff --git a/filetype_test.go b/filetype_test.go
index dfa9cce..62fa9fe 100644
--- a/filetype_test.go
+++ b/filetype_test.go
@@ -33,6 +33,8 @@ func TestIsType(t *testing.T) {
 		{[]byte{0xFF, 0xD8, 0xFF}, types.Get("jpg"), true},
 		{[]byte{0xFF, 0xD8, 0x00}, types.Get("jpg"), false},
 		{[]byte{0x89, 0x50, 0x4E, 0x47}, types.Get("png"), true},
+		{[]byte{0xFF, 0xFA, 0x90}, types.Get("mp3"), true},
+		{[]byte{0xFF, 0xFB, 0x90}, types.Get("mp3"), true},
 	}
 
 	for _, test := range cases {
@@ -70,6 +72,7 @@ func TestIsSupported(t *testing.T) {
 		{"abc", false},
 		{"png", true},
 		{"mp4", true},
+		{"mp3", true},
 		{"", false},
 	}
 
@@ -89,6 +92,7 @@ func TestIsMIMESupported(t *testing.T) {
 		{"foo/bar", false},
 		{"image/png", true},
 		{"video/mpeg", true},
+		{"audio/mpeg", true},
 	}
 
 	for _, test := range cases {
diff --git a/fixtures/sample.mp3 b/fixtures/sample.mp3
new file mode 100644
index 0000000..521e1f1
Binary files /dev/null and b/fixtures/sample.mp3 differ
diff --git a/match_test.go b/match_test.go
index b0e542f..cc7ab97 100644
--- a/match_test.go
+++ b/match_test.go
@@ -43,6 +43,7 @@ func TestMatchFile(t *testing.T) {
 		{"tar"},
 		{"tif"},
 		{"mp4"},
+		{"mp3"},
 	}
 
 	for _, test := range cases {
@@ -137,6 +138,7 @@ func TestMatchesMap(t *testing.T) {
 		{[]byte{0xFF, 0xD8, 0xFF}, true},
 		{[]byte{0x89, 0x50, 0x4E, 0x47}, true},
 		{[]byte{0xFF, 0x0, 0x0}, false},
+		{[]byte{0xFF, 0xFC, 0x90}, false},
 	}
 
 	for _, test := range cases {
diff --git a/matchers/audio.go b/matchers/audio.go
index 7b27caf..2d66124 100644
--- a/matchers/audio.go
+++ b/matchers/audio.go
@@ -28,8 +28,9 @@ func Midi(buf []byte) bool {
 
 func Mp3(buf []byte) bool {
 	return len(buf) > 2 &&
-		((buf[0] == 0x49 && buf[1] == 0x44 && buf[2] == 0x33) ||
-			(buf[0] == 0xFF && buf[1] == 0xfb))
+		((buf[0] == 0x49 && buf[1] == 0x44 && buf[2] == 0x33) || // ID3v2
+			// Final bit (has crc32) may be or may not be set.
+			(buf[0] == 0xFF && (buf[1] == 0xFA || buf[1] == 0xFB)))
 }
 
 func M4a(buf []byte) bool {