Overlapping music in forest level

[venegu]

Start screen music will play overlapped with forest level music once the song loops again (within the forest level). @-@

Note: This will only happen at every other loop of the music. For example: 1. forest music (first loop finished) --> 2. forest music & ss music (second loop finished) --> 3. forest music (third loop finished) --> 4. forest music && ss music... etc.