Hearts2Hearts 成员在练习生时期总是练习的歌曲列表：

• CARMEN - Gee & Mr. Mr by Girls' Generation
• YUHA, IAN, JIWOO, STELLA & YE-ON - Into The New World by Girls' Generation
- JUUN - Catch Me If You Can by Girls' Generation
- A-NA - Genie & Oh! by Girls' Generation
- STELLA - Supernova by aespa