Let's set the keyframe for this animation.

I went to the philharmonic concert.

The engine backfired, and I was surprised.

The crossfade of this song is very smooth, it's pleasant to listen to.

The DJ crossfaded two songs to create a smooth transition.

The levator costae brevis is a part of our back muscles.

The puborectalis muscle plays a crucial role in controlling defecation.

The stylohyoid muscle is part of the muscles of the head and has the role of lifting the hyoid bone.

The thyrohyoid muscle is one of the muscles that lift the larynx.

Qi is my best friend.