AKB48 Announces 30th Single "So long!"

AKB48 will be releasing their 30th single "So long!" on February 20th.
The new song will be heart warming song about graduation, something the group has experienced a lot of over the past year as many of the group's members graduated to take the next step in their career.
The upcoming single will come in Type A, K, B and Theater versions, each with its own track list. Check out the full tack list below:
Type A
CD
1. So long!
2. Waiting room (Undergirls)
3. Ruby (Shinoda Team A)
4．So long! (off vocal ver.
5．Waiting room (off vocal ver.)
6．Ruby (off vocal ver.)
DVD
1. So long! Music Video
2. Waiting room Music Video
3. Ruby Music Video
4. The 2nd AKB48 Kohau Taikou Uta Gassen ~Summary~
Type K
CD
1. So long!
2. Waiting room (Undergirls)
3. Yuuhi Marie (Oshima Team K)
4．So long! (off vocal ver.
5．Waiting room (off vocal ver.)
6．Yuuhi Marie (off vocal ver.)
DVD
1. So long! Music Video
2. Waiting room Music Video
3. Yuuhi Marie Music Video
4. The 2nd AKB48 Kohau Taikou Uta Gassen ~Red Team Digest~
Type B
CD
1. So long!
2. Waiting room (Undergirls)
3. Soko de Inu no Unchi Funjaukane? (Umeda Team B)
4．So long! (off vocal ver.
5．Waiting room (off vocal ver.)
6．Soko de Inu no Unchi Funjaukane? (off vocal ver.)
DVD
1. So long! Music Video
2. Waiting room Music Video
3. Soko de Inu no Unchi Funjaukane? Music Video
4. The 2nd AKB48 Kohau Taikou Uta Gassen ~Red Team Digest~
5. Sugar Rush Music Video
Theater Edition
CD
1. So long!
2. Waiting room (Undergirls)
3. Untitled (Kenkyuusei)
4．So long! (off vocal ver.
5．Waiting room (off vocal ver.)
6．Untitled (off vocal ver.)