Place it as the middle segment of a two-part edit, after the opening part has set up the age theme, then let background music carry the ending so the two-part sequence closes as one piece.
このサウンドについて
The '10 Age Part 2' clip is a 30-second music-style audio piece that continues the short series suggested by its title, picking up where the first part left off for listeners following it through. It gives a sense of continuation and anticipation, as if a familiar sequence is returning for another round, and works best when that follow-on moment is what you want to hear.