A set of tunes that were all in the Top 40 in late Dec 1978 ~
https://www.youtube.com/playlist?list=PLvaK4_KvCoO2_WP-ToO3loJu0bzsGeebR(Mr Microphone one-min TV ad)
Talking Heads - Take Me to The River (at #39, its first week in the Top 40)
Cars - My Best Friend's Girl (at #35, up 2 places from the prior week)
Heart - Straight On (at #31, down 16 from prior week, had peaked at #15)
(9-Lives Morris the Cat 30-sec TV ad)
Ambrosia - How Much I Feel (at #29, down 15, had peaked at #3)
Pointer Sisters - Fire (at #28, up 4) (written by Bruce)
Nicolette Larson - Lotta Love (at #27, first week in the Top 40, written by Neil Young)
Queen - Bicycle Race (at #25, up 2 places from prior week)
(Panasonic VCR 30-sec TV ad)
Ace Frehley - New York Groove (at #23, up 2)
Hot Chocolate - Every 1's A Winner (at #22, up 6)
Olivia Newton John - A Little More Love (at #19, up 7)
Firefall - Strange Way (at #16, down 5, peaked at #11)
(Robert Conrad Eveready 30-sec TV ad)
Al Stewart - Time Passages (at #14, down 7, peaked at #7)
Toto - Hold The Line (at #10, up 3)
Gino Vannelli - I Just Wanna Stop (at #6, down 2, peaked at #4)