had been jamming
- past perfect progressive of jam.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Indeed, Mayer had been jamming with select band members since March, learning the late Jerry Garcia’s guitar parts by ear and immersing himself in the repertoire in hopes of possibly hitting the road.
From Time • Aug. 5, 2015