diff --git a/apps/squeak4/electric.mmel b/apps/squeak4/electric.mmel
deleted file mode 100644
index 163e3fe..0000000
--- a/apps/squeak4/electric.mmel
+++ /dev/null
@@ -1 +0,0 @@
-"<C3CG/A#2A#F3/CCG/A#2A#A#4E>6<F2FE3CF2FF3CF2FG3CF2FA3C>2<C3CG/A#2A#F3/CCG/A#2A#A#4E>6<F2FE3CF2FF3CF2FG3CF2FA3C>2<G2D3FD/DAC4A3/FC4ECC3GC4B3>6<G3D4GF/DFE/CCB3C4B3C4B3>3GD4GF/DFE/<C3CG/A#2A#F3/CCG/A#2A#A#4E>6<F2FE3CF2FF3CF2FG3CF2FA3C>2<C3CG/A#2A#F3/CCG/A#2A#A#4E>6<F2FE3CF2FF3CF2FG3CF2FA3C>2CCG/A#2A#F3/CCG/A#2A#A#4E<F2FE3CF2FF3CF2FG3CF2FA3C>2<G2D3FD/DAC4A3/FC4ECC3GC4B3>6<G3D4GFD/FE/CCB3C4B3C4B3>2GD4GFDFE<C3CG/A#2A#F3/CCG/A#2A#A#4E>3C3GA#2F3CGA#2A#3AA#AFD#"
diff --git a/apps/squeak4/squeak4.c b/apps/squeak4/squeak4.c
index e4636de..fb34861 100644
--- a/apps/squeak4/squeak4.c
+++ b/apps/squeak4/squeak4.c
@@ -14,8 +14,10 @@
 #include "../fonts/font3x5_1.h"
 
 
-/* Connect piezo tweeter to outermost pins of UCFK4 P1 connector.  */
-#define PIEZO_PIO PIO_DEFINE (PORT_D, 6)
+/* Connect piezo tweeter to pins 6 and 8 of UCFK4 P1 connector
+   for push-pull operation.  This gives increased volume.  */
+#define PIEZO1_PIO PIO_DEFINE (PORT_D, 4)
+#define PIEZO2_PIO PIO_DEFINE (PORT_D, 6)
 
 /* Define polling rates in Hz.  */
 #define TWEETER_TASK_RATE 20000
@@ -41,7 +43,7 @@ static char *note_names[] = {"C", "C#", "D", "D#", "E", "F", "F#", "G", "G#", "A
 static const char tune1[] =
 {
 //#include "mysterex.mmel"
-#include "electric.mmel"
+#include "are_friends_electric.mmel"
 "    >"
 };
 
@@ -76,13 +78,18 @@ static void tweeter_task_init (void)
 {
     tweeter = tweeter_init (&tweeter_info, TWEETER_TASK_RATE, scale_table);
 
-    pio_config_set (PIEZO_PIO, PIO_OUTPUT_LOW);
+    pio_config_set (PIEZO1_PIO, PIO_OUTPUT_LOW);
+    pio_config_set (PIEZO2_PIO, PIO_OUTPUT_HIGH);
 }
 
 
 static void tweeter_task (__unused__ void *data)
 {
-    pio_output_set (PIEZO_PIO, tweeter_update (tweeter));
+     uint8_t state;
+
+    state = tweeter_update (tweeter);
+    pio_output_set (PIEZO1_PIO, state);
+    pio_output_set (PIEZO2_PIO, !state);
 }