diff --git a/notes.c b/notes.c
index 8d082ad..9b428d6 100644
--- a/notes.c
+++ b/notes.c
@@ -237,11 +237,11 @@ main(void)
 	unsigned short cycles = 0;
 	unsigned char tmp = 0;
 	for (unsigned char n = 0;; n = (n + 1) % 2) {
-		if (UCSR0A & (1 << RXC0)) {
-			mode = UDR0;
-			PORTD &= ~(1 << P_SPKR);
-			usart_send(mode);
-		}
+		if (PINC & _BV(5))
+			mode = '2';
+		else
+			mode = '0';
+
 		// check if any buttons are pressed, otherwise don't play a note
 		if (mode == '0' && ((PINB & PCMSK0) | (PINC & PCMSK1) | (PIND & PCMSK2)) == 0) {
 			// if a button was released, then send note and cycles played
@@ -261,23 +261,6 @@ main(void)
 			playtone();
 
 			cycles = (cycles + 1) % 0xffff;
-		} else if (mode == '1') {
-			note = usart_read();
-			if (note >= 'Z') note -= '0';
-			tmp = usart_read();
-			cycles = tmp << 8;
-			tmp = usart_read();
-			cycles |= tmp;
-			tmp = usart_read();
-
-			// reset to default mode when an invalid note is read
-			if (tmp != 'z' || note >= '|') {
-				mode = '0';
-				continue;
-			}
-
-			for (unsigned short i = 0; i < cycles; i++)
-				playtone();
 		} else if (mode == '2') {
 			play_note(MARIO + 0, 131 * 0.3);
 			play_note(MARIO + 1, 262 * 0.3);
@@ -285,14 +268,14 @@ main(void)
 			play_note(MARIO + 3, 220 * 0.3);
 			play_note(MARIO + 4, 117 * 0.3);
 			play_note(MARIO + 5, 233 * 0.3);
-			play_note(255, 1800);
+			_delay_ms(1800);
 			play_note(MARIO + 0, 131 * 0.3);
 			play_note(MARIO + 1, 262 * 0.3);
 			play_note(MARIO + 2, 110 * 0.3);
 			play_note(MARIO + 3, 220 * 0.3);
 			play_note(MARIO + 4, 117 * 0.3);
 			play_note(MARIO + 5, 233 * 0.3);
-			play_note(255, 1800);
+			_delay_ms(1800);
 
 			play_note(MARIO + 6, 87 * 0.3);
 			play_note(MARIO + 7, 175 * 0.3);
@@ -300,59 +283,57 @@ main(void)
 			play_note(MARIO + 9, 147 * 0.3);
 			play_note(MARIO + 10, 78 * 0.3);
 			play_note(MARIO + 11, 156 * 0.3);
-			play_note(255, 1800);
+			_delay_ms(1800);
 			play_note(MARIO + 6, 87 * 0.3);
 			play_note(MARIO + 7, 175 * 0.3);
 			play_note(MARIO + 8, 73 * 0.3);
 			play_note(MARIO + 9, 147 * 0.3);
 			play_note(MARIO + 10, 78 * 0.3);
 			play_note(MARIO + 11, 156 * 0.3);
-			play_note(255, 1800);
+			_delay_ms(1800);
 
 			play_note(MARIO + 12, 156 * 0.3);
-			play_note(255, 25);
+			_delay_ms(25);
 			play_note(MARIO + 13, 147 * 0.3);
-			play_note(255, 25);
+			_delay_ms(25);
 			play_note(MARIO + 14, 139 * 0.3);
-			play_note(255, 25);
+			_delay_ms(25);
 			play_note(MARIO + 15, 131 * 0.6);
-			play_note(255, 25);
+			_delay_ms(25);
 			play_note(MARIO + 16, 156 * 0.3);
-			play_note(255, 25);
+			_delay_ms(25);
 			play_note(MARIO + 17, 147 * 0.6);
-			play_note(255, 25);
+			_delay_ms(25);
 			play_note(MARIO + 18, 104 * 0.6);
-			play_note(255, 25);
+			_delay_ms(25);
 			play_note(MARIO + 19, 98 * 0.6);
-			play_note(255, 25);
+			_delay_ms(25);
 			play_note(MARIO + 20, 139 * 0.6);
 
 			play_note(MARIO + 21, 156 * 0.3);
-			play_note(255, 25);
+			_delay_ms(25);
 			play_note(MARIO + 22, 185 * 0.3);
-			play_note(255, 25);
+			_delay_ms(25);
 			play_note(MARIO + 23, 175 * 0.3);
-			play_note(255, 25);
+			_delay_ms(25);
 			play_note(MARIO + 24, 165 * 0.3);
-			play_note(255, 25);
+			_delay_ms(25);
 			play_note(MARIO + 25, 233 * 0.3);
-			play_note(255, 25);
+			_delay_ms(25);
 			play_note(MARIO + 26, 220 * 0.3);
-			play_note(255, 25);
+			_delay_ms(25);
 			play_note(MARIO + 27, 208 * 0.6);
-			play_note(255, 25);
+			_delay_ms(25);
 			play_note(MARIO + 28, 156 * 0.6);
-			play_note(255, 25);
+			_delay_ms(25);
 			play_note(MARIO + 29, 123 * 0.6);
-			play_note(255, 25);
+			_delay_ms(25);
 			play_note(MARIO + 30, 123 * 0.6);
-			play_note(255, 25);
+			_delay_ms(25);
 			play_note(MARIO + 31, 110 * 0.6);
-			play_note(255, 25);
+			_delay_ms(25);
 			play_note(MARIO + 32, 104 * 0.6);
-			play_note(255, 25);
-
-			play_note(255, 3600);
+			_delay_ms(25);
 		}
 	}
 }