Script to play a sound file then pause for 30 seconds and play another sound file

Could someone help me. I need a bash script to play a short sound file, wait for 30 seconds, play another sound file, wait for another 30 seconds.

(I will use it as a reminder to spend 30 seconds on each quadrant of my teeth when using a electric toothbrush.)

mpg123 /usr/share/sounds/My_Sounds/Alarm_Clock_Sound.mp3 sleep 30 mpg123 /usr/share/sounds/My_Sounds/Alarm-sound-buzzer.mp3 sleep 30 mpg123 /usr/share/sounds/My_Sounds/facility-alarm.mp3 sleep 30

But it only plays the first sound file. ??

#!/bin/bash
mpg123 /usr/share/sounds/My_Sounds/Alarm_Clock_Sound.mp3 
sleep 30 
mpg123 /usr/share/sounds/My_Sounds/Alarm-sound-buzzer.mp3
sleep 30 
mpg123 /usr/share/sounds/My_Sounds/facility-alarm.mp3
sleep 30
echo DONE
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