It's more West Coast than Motown, a style of rhythm and blues filtered through Chicano culture that broke through with Ritchie Valens.

Source: https://www.bakersfield.com/entertainment/music/cesareo-garasa-musical-all-ages-event-good-for-the-soul/article_5d6c2454-a7db-11ed-805f-4f20bf78907a.html

The Crickets are as tight as a drum, there are great “cameos” from Christopher Chandler as The Big Bopper (Chantilly Lace) and Miguel Angel as Ritchie Valens (La Bamba) but Chris Weeks in the title roll is outstanding.

Source: https://www.peterboroughtoday.co.uk/whats-on/arts-and-entertainment/review-oh-boy-it-makes-you-want-to-rave-on-4350820

The Winter Dance Party concert tour which included Buddy Holly, Ritchie Valens and J.P. Richardson (also known as the Big Bopper) played at the Surf Ballroom in Clear Lake, Iowa, on Feb. 2, 1959.

Source: https://myvalleynews.com/blog/2023/02/25/campbell-honors-buddy-holly-with-february-3-skydiving-jump/