diff --git a/internal/types/types.go b/internal/types/types.go
index 8da1f67..a9cbe90 100644
--- a/internal/types/types.go
+++ b/internal/types/types.go
@@ -21,62 +21,62 @@ type MidiCSVRecord struct {
 // }
 
 type NoteOn struct {
-	Time     time.Time
-	Channel  uint8
-	Key      uint8
-	Velocity uint8
+	Time     time.Time `json:"time"`
+	Channel  uint8     `json:"channel"`
+	Key      uint8     `json:"key"`
+	Velocity uint8     `json:"velocity"`
 }
 
 type NoteOff struct {
-	Time    time.Time
-	Channel uint8
-	Key     uint8
+	Time    time.Time `json:"time"`
+	Channel uint8     `json:"channel"`
+	Key     uint8     `json:"key"`
 }
 
 type ProgramChange struct {
-	Time    time.Time
-	Channel uint8
-	Program uint8
+	Time    time.Time `json:"time"`
+	Channel uint8     `json:"channel"`
+	Program uint8     `json:"program"`
 }
 
 type Aftertouch struct {
-	Time     time.Time
-	Channel  uint8
-	Pressure uint8
+	Time     time.Time `json:"time"`
+	Channel  uint8     `json:"channel"`
+	Pressure uint8     `json:"pressure"`
 }
 
 type ControlChange struct {
-	Time       time.Time
-	Channel    uint8
-	Controller uint8
-	Value      uint8
+	Time       time.Time `json:"time"`
+	Channel    uint8     `json:"channel"`
+	Controller uint8     `json:"controller"`
+	Value      uint8     `json:"value"`
 }
 
 type NoteOffVelocity struct {
-	Time     time.Time
-	Channel  uint8
-	Key      uint8
-	Velocity uint8
+	Time     time.Time `json:"time"`
+	Channel  uint8     `json:"channel"`
+	Key      uint8     `json:"key"`
+	Velocity uint8     `json:"velocity"`
 }
 
 type Pitchbend struct {
-	Time     time.Time
-	Channel  uint8
-	Value    int16
-	AbsValue uint16
+	Time     time.Time `json:"time"`
+	Channel  uint8     `json:"channel"`
+	Value    int16     `json:"value"`
+	AbsValue uint16    `json:"absvalue"`
 }
 
 type PolyAftertouch struct {
-	Time     time.Time
-	Channel  uint8
-	Key      uint8
-	Pressure uint8
+	Time     time.Time `json:"time"`
+	Channel  uint8     `json:"channel"`
+	Key      uint8     `json:"key"`
+	Pressure uint8     `json:"pressure"`
 }
 
 // Raw sends raw bytes to the server
 type Raw struct {
-	Time time.Time
-	Data []byte
+	Time time.Time `json:"time"`
+	Data []byte    `json:"data"`
 }
 
 // Get around gob types