Wanted to get this under the wire before Summer completely leaves us, although the recent weather here in Toronto has shown that it probably already has.
It just wouldn't be a Summer without a TUBE song. And so, this was the band's big contribution for 1990 when it was released in May. Just to differentiate it a bit from past hits like "Season in the Sun" and "Summer Dream", the creators of "Ah--Natsu Yasumi"(Summer Vacation), lead vocal Nobuteru Maeda（前田亘輝）and guitarist Michiya Haruhata（春畑道哉）, added a bit of Latin spice to the melody.
The song reached No. 10 on Oricon and became the 48th-ranked song of the year. And it's also a track on the band's 10th album, "N-A-T-S-U"(June 1990) which peaked at the No. 2 spot.