Add a "c" to a security device to get this timepiece
clock
She originally wanted to use the stage name Bacardi
Cardi B
Add an "H" to a feline to get this informal talk (& also the French for feline)
chat
"Bad At Love" singer Ashley Frangipane uses this anagram of her first name as her stage name
Halsey
Add a letter to a unit for measuring the fineness of gold to get this martial art
karate
Five Finger Death Punch got its name from a deadly move Uma Thurman used in this Tarantino movie series
Kill Bill
Add a letter to a word meaning "difficult" to get this, a stockpile
hoard
Donald Glover got this rap name from an online Wu-Tang Clan name generator
Childish Gambino
A metric measure of liquid pours in a letter to do this, to linger aimlessly
loiter
Singer Abel Tesfaye had to drop an "E" from his stage name because of this other Canadian act
The Weekend