B-side
 US /ˈbiː.saɪd/
 UK /ˈbiː.saɪd/

1. 
sisi-B, lagu sampingan
a secondary song on a vinyl single, typically less prominent than the A-side
:
• 
Many classic rock bands released some of their best material as B-sides.
Banyak band rock klasik merilis beberapa materi terbaik mereka sebagai sisi-B.
• 
The song on the B-side became a surprise hit.
Lagu di sisi-B menjadi hit kejutan.